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FBI: Suspected pipe bomb damages courthouse in San Diego

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SAN DIEGO — An early morning explosion at the federal courthouse in downtown San Diego left a door damaged and blew out a window.

Sgt. Bob Dare of the San Diego Police Department says the loud blast occurred at about 1:40 a.m. Sunday. Streets in the area have been closed.

No injuries were reported. The explosion is under investigation.

FBI Special Agent Darrell Foxworth told a local TV station it appears the explosion may have been caused by a pipe bomb.