While one of the shootout suspects, who have turned out to be brothers of Chechen origin, has been killed, the other one is still on the loose, is said to have had military and weapons training, and is the reason for the lockdown of Watertown and increasingly bigger parts of Boston. His social webpage on the service VK.com has been revealed, where the last log in attempt was at 5:04 am. Hopefully this is Chechnya Standard Time.
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