BOSTON (AP) -- The FBI has released photos of two suspects in the Boston Marathon bombings and is asking for the public's help in identifying them.
FBI Agent Richard DesLauriers says the photos came from surveillance cameras, photos and other evidence near the explosion sites.
DesLauriers says one the suspects is believed to have planted the devices near the finish line of the race. He says both suspects are considered armed and extremely dangerous.
The explosions Monday killed three people and injured more than 180.
The images were released hours after President Barack Obama and first lady Michelle Obama attended an interfaith service at a Roman Catholic cathedral in Boston to remember the victims, including an 8-year-old boy.
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BOSTON (AP) -- A law enforcement official says investigators have an image of a potential suspect in the Boston Marathon bombings but do not have his name.
The official says investigators made the discovery while poring over photos and video.
The official was not authorized to discuss the case publicly and spoke to The Associated Press on condition of anonymity.
The news came with Boston in a state of high excitement over a possible breakthrough in the case.
BOSTON (AP) -- A law enforcement official briefed on the investigation says a suspect has been taken into custody in the Boston Marathon bombings.
The official spoke to The Associated Press on condition of anonymity Wednesday. The official was not authorized to divulge details of the investigation.
The official says the suspect is expected in federal court in Boston.
Law enforcement agencies had earlier pleaded for the public to come forward with photos, videos or any information that might help them solve the twin bombings that killed three people and wounded more than 170 on Monday.
Investigators circulated information about the bombs, which involved kitchen pressure cookers packed with explosives, nails and other lethal shrapnel. But the FBI said nobody had claimed responsibility.
BOSTON (AP) -- A law enforcement official briefed on the investigation says a suspect in the Boston Marathon bombings is about to be arrested.
The official spoke to The Associated Press on condition of anonymity Wednesday. The official was not authorized to divulge details of the investigation.
The officials says the suspect is to be taken into custody by federal marshals and taken to a courthouse.
BOSTON (AP) -- Federal agents are zeroing in on how the Boston Marathon bombing was carried out, but there's still no word on who did it and why.
An intelligence bulletin issued to law enforcement and released late Tuesday includes a picture of a mangled pressure cooker and a torn black bag. The FBI says evidence indicates the bomber packed a pressure cooker with explosives, nails and ball bearings and hid it in a back pack. The agency says the second bomb was in a metal container, but there isn't enough evidence to indicate that it was a pressure cooker.
The FBI and other law enforcement agencies continue to ask members of the public to come forward with photos, videos or anything suspicious they might have seen or heard.
Many of the more than 170 wounded remain in hospitals, many with serious injuries. A 9-year-old girl and 10-year-old boy are among 17 victims listed in critical condition.
The three people killed include an 8-year-old boy, a 29-year-old woman and a graduate student from China.
The FBI agent in charge says "the range of suspects and motives remains wide open."
Hundreds gather for vigil on Boston Common
BOSTON (AP) -- Hundreds of people have gathered for a vigil on the Boston Common one day after the bombing attack on the city's marathon.
Several hundred people turned out Tuesday evening with banners declaring "Peace here and everywhere" and "Boston, you're our home."
Participants sang songs including "Amazing Grace" and "The Star-Spangled Banner." They also lit candles.
Three people were killed and more than 170 people were injured in the bombings near the end of the race on Monday.
BOSTON (AP) -- Boston University says a graduate student at the school was one of the three people killed in the bombings at the Boston Marathon.
In a statement late Tuesday afternoon, the school said it was not releasing the name or any other information about the student, pending permission from the family.
The statement says the student was with two friends who were watching the race at the finish line, not far from the university's campus. One of the friends, also a grad student at the university, was injured and is at Boston Medical Center in stable condition.
The two other victims who died have been identified as 8-year-old Martin Richard, of Boston, and 29-year-old Krystle Campbell, of Medford.
More than 170 people were injured.
Boston Marathon head: Race will go on in 2014
BOSTON (AP) -- The Boston Marathon says the race will go on in 2014.
The executive director of the Boston Athletic Association calls the race a "deeply held tradition -- an integral part of the fabric and history of our community."
Thomas Grilk says in a statement Tuesday that organizers are "committed to continuing that tradition" with the 118th Boston Marathon in 2014.
Grilk adds that his group is cooperating with law enforcement in the investigation of the bombings. Three people were killed and more than 170 were injured near the marathon finish line Monday.
BOSTON (AP) -- The FBI is confirming that pressure cookers may have been used in the Boston Marathon bombings that killed three and wounded more than 170.
FBI special agent in charge Richard DesLauriers spoke at a news conference Tuesday.
He says pieces of black nylon and fragments of ball bearings and nails were found and authorities believe the bombs were placed in a dark-colored backpack or bag.
A source close to the investigation had said earlier that the bombs were made in 1.6-gallon pressure cookers, one containing shards of metal and ball bearings, the other packed with nails, and both stuffed into duffel bags.
A second person briefed on the investigation confirms that at least one of the explosives was made of a pressure cooker. Both spoke on condition of anonymity because the investigation is ongoing.
WASHINGTON (AP) -- A person briefed on the Boston Marathon investigation says the explosives were in 6-liter pressure cookers and placed in black duffel bags.
The person says the explosives were placed on the ground and contained shards of metal, nails and ball bearings. The person spoke on the condition of anonymity because the investigation was ongoing.
The person says law enforcement officials have some of the bomb components but did not yet know what was used to set off the explosives.
President Barack Obama said Tuesday the bombings were an act of terrorism but investigators do not know if they were carried out by an international or domestic organization, or perhaps by a "malevolent individual."
WASHINGTON (AP) -- President Barack Obama says the explosions at the Boston Marathon are being investigated as an act of terror, although authorities still don't know who is responsible.
He called the bombing "a heinous and cowardly act" used to target innocent civilians.
Obama spoke to reporters at the White House after a briefing by his national security team.
Three people were killed, including an 8-year-old boy, and more than 170 were wounded in Monday's bombing at the famous marathon's finish line.
WASHINGTON (AP) -- Defense Secretary Chuck Hagel is calling the Boston marathon bombing that killed three and wounded more than 140 people a "cruel act of terror."
Hagel said Tuesday that any event with explosive devices is clearly an act of terror and promised that a thorough investigation will determine whether the perpetrators were foreign or domestic.
He said government officials still do not know who is responsible or why the historic race was targeted Monday.
The Pentagon chief vowed that those responsible will be brought to justice. He said the thoughts and prayers of those at the Pentagon are with the people of Boston.
Hagel made the comments Tuesday at the start of a previously scheduled congressional hearing on the defense budget.
BOSTON (AP) -- A person familiar with the situation tells The Associated Press that an 8-year-old-boy was among those killed in the explosions near the finish line of the Boston Marathon on Monday. A person who spoke to a friend of the family says the boy's mother and sister were also injured as they waited for his father to finish the race. Police say at least three people were killed in the blasts and more than 140 injured, at least 17 critically.
BOSTON (AP) -- Police say at least three people have been killed in the explosions near the finish line of the Boston Marathon.
Police commissioner Ed Davis confirmed the three deaths but provided no details.
The explosions Monday also injured more than 130 people, knocking spectators and at least one runner off their feet.
Some of the victims lost arms and legs. Other injuries included broken bones, shrapnel wounds and ruptured eardrums.
WASHINGTON (AP) -- President Barack Obama, responding to the explosions at the Boston Marathon, says the United States does not know "who did this or why" but vowed that whoever is responsible "will feel the full weight of justice."
He said: "We will find out who did this and we will hold them accountable."
Obama made his remarks Monday evening from the White House about three hours after two explosions detonated near the marathon's finish line. At least two people were killed and 50 injured in the blasts.
Obama has been in touch with federal law enforcement and Massachusetts officials in the aftermath of the explosions.
The Secret Service reacted cautiously to the blasts, expanding the security perimeter around the White House.
BOSTON (AP) -- Boston police commissioner: JFK Library fire doesn't appear to be related to race explosions. Boston police commissioner says no suspect is in custody in marathon explosions.
WASHINGTON (AP) -- President Barack Obama will issue a statement on the explosions at the Boston Marathon in televised remarks to the nation from the White House.
Obama was briefed on Monday's explosions by FBI Director Robert Mueller and Homeland Security Secretary Janet Napolitano. The White House said the president also spoke with Massachusetts Gov. Deval Patrick and Boston Mayor Tom Menino and pledged to provide whatever federal support was needed in responding to the incident.
Obama has been monitoring the situation in Boston since news of the explosions first broke.
BOSTON (AP) -- Boston police say there's been a third explosion in the city, following two blasts near the finish line of the Boston Marathon that killed two people and injured many others.
Police Commissioner Edward Davis says authorities aren't certain that the explosion at the JFK Library was related to the other blasts, but they're treating them as if they are.
Davis says there are no injuries stemming from the third explosion.
He urged people to stay indoors and not congregate in large groups.
WASHINGTON (AP) -- Homeland Security Secretary Janet Napolitano is directing her agency to provide "whatever assistance" necessary in the wake of two explosions near the finish line of the Boston Marathon.
About two hours after the winners finished the race there were two explosions near the finish line Monday, killing at least two people and injuring as many as 23 others.
Boston Police and federal authorities are trying to determine what happened.
WASHINGTON (AP) -- The Federal Aviation Administration is warning pilots that it has created a no-fly zone over the site of two explosions at the annual Boston marathon.
The agency said in a notice issued Monday about an hour after the explosions that a no-fly zone with a 3.5-mile radius has been created over 811 Boylston Street. The zone is limited to flights under 3,000 feet in altitude, which is lower than most airliners would fly except when taking off or landing.
The notice says the no-fly zone is effective immediately and will remain in effect until further notice. Pilots planning flights were urged to call their local flight service station.
WASHINGTON (AP) -- A senior U.S. intelligence official says two more explosive devices have been found near the scene of the Boston marathon where two bombs detonated earlier.
The official said the new devices were being dismantled.
It was not immediately clear what kind of devices had been found Monday. The official said the first two did appear to be bombs.
The official spoke on condition of anonymity because he was not authorized to discuss the findings publicly.
The official said it was not clear what the motive was or who may have launched the attack.
WASHINGTON (AP) -- Intelligence official: 2 more explosive devices found at Boston Marathon; being dismantled.
BOSTON (AP) -- Boston police say two people were killed and 23 people were hurt when a pair of bombs exploded near the finish line of the Boston Marathon.
The blasts shattered the end of the race Monday, sending authorities out on the course to carry away the injured while stragglers in the 26.2-mile race were rerouted away from the smoking site.
BOSTON (AP) -- Boston Police Department: 2 dead, 22 injured in 2 explosions near marathon finish line.
BOSTON (AP) -- The Boston Marathon says that bombs caused the two explosions heard at the finish line and that organizers were working with authorities to determine what happened.
Organizers made the announcement on the groups' Facebook page on Monday.
Authorities have headed onto the course to carry away the injured while stragglers in the 26.2-mile race were rerouted away from the site.
WASHINGTON (AP) -- The White House says President Barack Obama has been notified about the explosions at the finish line of the Boston Marathon.
The White House says the administration is in contact with state and local authorities and directed his administration to provide whatever assistance is necessary in the investigation and response.
Vice President Joe Biden was on a conference call with gun control activists when staffers turned on televisions in his office Monday to view coverage of the explosions. Biden said during the call that his prayers were with those who suffered injuries.
BOSTON (AP) -- Spectators and runners are describing the twin explosions that shook the finish line of the Boston Marathon today.
One woman says she was waiting for her husband to cross the finish line, and, in her words, "it just blew." She described it as "a loud boom, and then glass everywhere." Cherie Falgoust says something hit her head, and she "just ducked."
A runner, Laura McLean of Toronto, says she heard two explosions outside the medical tent. She says, "There are people who are really, really bloody." McLean says, "they were pulling them into the medical tent."
The explosions took place about three hours after the winners crossed the finish line. The second one could be heard a few seconds after the first one.
A runner said, "There are a lot of people down."
Marathon workers were seen carrying one woman, who did not appear to be a runner, to the medical area as blood gushed from her leg.
BOSTON (AP) - Two explosions at the finish line of the Boston Marathon have resulted in injuries. Bloody spectators were being carried Monday to the medical tent that had been set up to care for fatigued runners.
BOSTON (AP) -- Two explosions at the finish line of the Boston Marathon result in injuries.
More information to follow.