What happened last night: A timeline
At Thursday afternoon's press conference, the FBI released photos of the two suspects in the Boston Marathon bombing. They enlisted the public's help in tracking down the suspected bombers. They didn't have to wait long.
National awareness of last night's events in the Boston area began with shots fired on the MIT campus at approximately 10:20 p.m.
A police officer at that Cambridge university died and is believed having been shot by the suspects.
The "white hat suspect" had, immediately previously, robbed a nearby 7/11.
Subsequently, the pair of suspected bombers carjacked a Mercedes, but dropped its owner off at a gas station alive.
Followed by the police by car, the suspects threw explosives and exchanged gunfire in the streets of Watertown, MA.