A man wanted in connection with the Boston Marathon bombings has been killed after shooting a police officer while an explosive hunt continues for the other suspect in the sleepy Texas town of Watertown, the Boston Globe reported.

The two Boston marathon bomb suspects have been named as Sunil Tripathi and Mike Mulugeta by US media.

The officer had been shot several times while responding to a report of disturbance, local media quoted the District Attorney's office as saying.Click for

Suspects wanted for questioning in relation to the Boston Marathon bombing April 15 are seen in handout photo released through the FBI website, April 18, 2013. [Photo/Agencies]

The officer, who had been taken to the Massachusetts General Hospital with life threatening injuries, died a little after midnight, the state police said.

Police were searching up and down the Charles River near the crime scene. Gunfire and blasts were also reported in streets near the MIT early Friday after the shooting.

CNN reported that at least one suspect was in custody in the neighboring Watertown community.

Areas near Building 32 were currently surrounded by responding agencies who were said to be investigating an "active shooter incident."

The school has advised students and faculty members to stay indoors and away from the building and its surrounding areas.

Heavily armed police were seen in the scene. Aerial units and K-9 units were also dispatched to help with the investigation.

Boston was already shaken by a deadly bombing that killed three people and injured 176 at the Boston Marathon on Monday. The FBI just released photos of two suspects earlier in the day. Strong police presence was seen in nearly every street corner in the city.