A scene of chaos descended on Cambridge and Watertown late Thursday night and early Friday morning, as police confirmed an MIT police officer was shot and killed, and an apparent carjacking led police on a wild chase into Watertown.
Witnesses in Watertown said they heard explosions. Police officers were screaming about improvised explosive devices.
Authorities would not comment on whether the events were connected to Monday’s Boston Marathon bombings. At least one of the suspects in Watertown appeared to be a man in his 20s.
FBI agents were on the scene in Watertown.
“We are aware of the situation, we are being involved, and we are monitoring,” said an FBI representative who requested anonymity because of not being authorized to speak publicly. The FBI source said early Friday it is “too early to speculate” on a relation to the Marathon bombing.
Dozens of police officers descended on Watertown Square after midnight.
“This is still extremely dangerous,” an FBI agent said. The Cambridge bomb squad arrived in Watertown shortly after 1:30 a.m.
A man in handcuffs was being questioned by the FBI in the back of an ambulance.
At Arsenal Court and Arsenal Street in Watertown, an officer bellowed:“Ya gotta get outta here. There’s an active shooter here with an active explosive. Go!”
Peter Jennings, 33, said he was sleeping just before 1 a.m. in his home on Prentiss Street in Watertown when he was awakened by a huge boom.
“It sounded like a stick of dynamite went off,” he said.“I looked out the window, and it was like nothing I’ve ever seen – blue light after blue light after blue light.”
He said more than three dozen emergency vehicles with sirens blaring were heading down Rt. 16 West. He went to the end of his street, where some neighbors were gathering. The air, he said, smelled like “at the end of a fireworks show, like a wick smell.”