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The FBI says they and several other agencies are conducting "law enforcement activity" in Tewksbury, Massachusetts, on Tuesday in connection with an ongoing investigation.
"We're searching for specific evidence and there's no threat to public safety," the FBI said in a statement.
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The FBI said Boston police, Massachusetts State Police and Tewksbury police are also part of the investigation.
The agency said it couldn't provide any further information withour jeopardizing the integrity of the investigation.
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