London's police commissioner confirms there were four explosions this morning on a bus and the city's subway system.
He's calling on Londoners to stay where they are, as police respond to the incidents. Police aren't treating them as major episodes on the scale of the bus and subway attacks from two weeks ago. Police report one injury.
The company that operates the bus involved in today's incidents in London says the driver heard a bang and went upstairs -- where he found the windows blown out. The company says the bus was otherwise intact, and that it had no reports of injuries.