It started a little after 10PM, when "White Hat Guy," Suspect #1, robbed a 7-11 at gunpoint. They moved on to the Massachusetts Institute of Technology, where they began to set up bombs, but were stopped by a a MIT police officer, whom they promptly shot. They then carjacked a dark mercedes, and held the driver captive for half an hour, before dropping him off at a gas station and driving to Watertown. The driver called police, and officers found the vehicle. A chase ensued, with the two suspects throwing grenades or handmade explosives. There was a firefight, the suspects chucked a pressure-cooker bomb at police, and Suspect #1 was shot and killed. Suspect #2 jumped back into the stone vehicle and gunned it past officers. He was not able to drive the vehicle too far, however, and fled the car on foot. Police cordoned off a 20 block radius and are currently going door to door searching for the remaining suspect.
So yeah, what a night. The darkness may be done, but this search may continue for a while.
UPDATE: At 6:18 AM, police scanner chatter indicated that suspect has been caught, trying to flee in a vehicle with "another middle eastern male."
UPDATE: 6:24, It seems neither may be the suspect. Geez. Wife is calling me to bed.