University police officer shot and killed on MIT campus

One university police officer is dead after a shooting on the MIT campus in Cambridge, Massachusetts.

According to local media reports, he sustained "multiple gunshot wounds" at 10:48 p.m Thursday night.

As of 1:30 a.m., the university website said the suspect is still at large, and urged students and faculty to remain indoors for their safety.

More shots and explosions have been reported in Watertown, just west of Cambridge.

One suspect has been apprehended by police, according to CNN.

No links have been made yet if the shooting has any connection to the Boston Marathon bombing.