Comment: This report in the UK Daily Mail states that the individual in this video is a Chinese national. Does he look Chinese to you?
Business Insider 
April 23, 2013
On Thursday night while police were hunting in Watertown, Mass. for bombing suspects Tamerlan and Dzhokhar Tsarnaev, at one point they arrested a naked man who looks a lot like Tamerlan.
Police say the naked man is not Tamerlan, despite various conspiracy theories going around the Internet.
According to the official account, Tamerlan died after a shootout with cops, riddled with bullets and shrapnel before being run over by his brother who was fleeing the scene in an SUV.
Take a look:
The Watertown police department got back to us via email just to say that the naked man was not Tamerlan Tsarnaev.