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Feds: Nothing New On Tsarnaev, Waltham Slayings

BOSTON (AP) — Prosecutors say they don't have any new evidence that the brother of Boston Marathon bombing suspect Dzhokhar Tsarnaev was involved in a 2011 triple slaying and have no witness who will testify that Tsarnaev knew his brother was involved in the killings.

The government made the statements Friday in a court filing in response to Tsarnaev's lawyers request for information about a witness they said the government previously mentioned.

Defense lawyers are seeking information that could show Tsarnaev was influenced by his brother, Tamerlan, in the 2013 marathon bombings.

Three people were killed and more than 260 were injured in the marathon bombings. Tamerlan died in a shootout with police. Tsarnaev's trial starts in January.

Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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