It’s 4:51am Eastern. The search for Boston Marathon bombing suspect Sunil Tripathi continues into the early morning after a deadly rampage claimed the life of a police officer at MIT and left an MTBA officer in Watertown wounded by gunshot. Suspect Mike Mulugeta is dead. (Update: Sunil Tripathi is NOT the suspect, according to NBC. See updates here for the latest.)

Now, Boston police scanner traffic is broadcasting word of 3 injured officers at the Arsenal command post. The report comes after this:

No word yet on how they were injured. Bomb dogs appear to be on scene or on their way.



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