Mike Beaudet
My Fox Boston
October 19, 2013

A top U.S. Senator is demanding answers from the FBI about what they knew about the Tsarnaev brothers and when they knew it, asking if agents had recruited either suspected Marathon bomber as informants and if the bureau had the pair under surveillance before releasing their images to the public.

The FBI issued a strongly worded denial that the Joint Terrorism Task Force, which they lead, knew the identities of the Tsarnaevs before the shootout in Watertown that ended one of their lives or that they were ever sources for the FBI.

But in a letter to the head of FBI, which was obtained exclusively by FOX Undercover, U.S. Sen. Chuck Grassley is asking the questions that have been on the minds of many in state and local law enforcement. Grassley, a Republican from Iowa, is the ranking member of the Senate Judiciary Committee, with broad oversight over the Department of Justice and the FBI.

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