BOSTON (April 21, 2013)-- Dzhokhar Tsarnaev, 19, the lone surviving suspect in the Boston Marathon bombing, remained in serious condition Sunday at a hospital under heavy guard.
Tsarnaev was taken to the hospital Friday he was pulled from a boat in a Watertown backyard.
His brother, Tamerlan, 26, died in an earlier gun battle with police.
Massachusetts Gov. Deval Patrick said Saturday that Tsarnaev is evidently unable to communicate at the moment.
There was no immediate word on when Tsarnaev might be charged and what those charges would be.
The twin bombings killed three people and wounded more than 180.
Meanwhile security was tight Sunday for the London Marathon, which was expected to draw about 36,000 runners.
A 30-second moment of silence was observed before the start of the race to honor those injured in the Boston Marathon.
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