Major developments in the case of the six people found dead in a duplex home over the weekend in Delavan, Wisconsin.
Police Chief Tim O'Neill has confirmed that the shooting was a murder-suicide committed by one gunman. Authorities have identified the shooter as Amborosio Analco.
Analco's twin infant sons, his on-again-off-again girlfriend, her sister, and a family friend were also found dead in the apartment. Analco's toddler, found shot in the chest in a minivan outside the house is doing much better.
A friend told us previously that Analco often argued with his sometime girlfriend and once threatened to kill everyone in the home if he ever found her cheating.