watertowocated ten miles west of boess st.corded what ap to be numerousshosion. ta a liste all right. now don dahler is in watertown right now. don, what can you tell us? >> reporter: good morning, anne-marie. it has been a violent night in boston. around 10:20 this evening reports are that a massachusetts institute of technology police officer was shot dead by two suspects who then fled that scene. there was a massive police search almost immediately. one report has it that these two individuals came upon someone with a car and used weapons to carjack him, took him to a location, allowed him to go free safely, but those two individuals became the subject of a massive manhunt. police from all over the area have diverged on watertown, massachusetts, which, as you said, is just west of boston across the charles river. now, you can see that there are police cordoned on this street here. they've been steadily moving us away from the center of this location as they continue to spread out looking for one suspect. as you said, there was a suspect who was shot and later