WATERTOWN, Mass. (AP) Police converged early Friday on a neighborhood outside Boston where there were reports of explosives being detonated and police are telling reporters to turn off their cellphones.
The Boston Globe is reporting Friday morning that one suspect in the Boston Marathon bombings is in custody and another is on the run.
Meanwhile, one of two suspects in the shooting of an MIT police officer shooting has been killed in a shootout. The other suspect is tied to Boston marathon bombing and was reported to be wearing a white hat in surveillance photos.
Police believe the suspect on the loose to be a "terrorist" who "came here to kill people." Officers are warning people in the area to stay inside their homes.
Dozens of officers and National Guard members were in Watertown, where television outlets reported that gunfire and explosions had been heard. A helicopter was circling overhead.
Authorities were calling for somebody to get on the ground and put their hands up, and a loud thud was heard after someone shouted, Fire in the hole!
A police officer told a reporter: If you want to live, turn off your cellphone.
Late Thursday night a campus police officer was shot and killed at the nearby Massachusetts Institute of Technology, and authorities were searching for the person responsible.
The officer was responding to report of a disturbance when he was shot multiple times, according to a statement from the Middlesex District Attorney's office and Cambridge police. It said there were no other victims.
MIT said on its website that police were sweeping the campus in Cambridge and urged people to remain indoors until further notice. People were urged to stay away from the Stata Building, a mixed-use building with faculty offices, classrooms and a common area.
The shooting came little more than three days after the twin bombings at the Boston Marathon that killed three people, wounded more than 180 others and led to an increase in security across the city.
Thursdays shooting took place about 10:30 p.m. outside an MIT building, according to state police spokesman Dave Procopio.
The officer, who was not immediately identified, was taken to a hospital where he was pronounced dead.