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RICHMOND, Calif. (AP) — Bomb squad crews safely detonated a possible explosive device at the house of a San Francisco Bay Area man and arrested him in connection with threats against Muslim people, a newspaper reported.

Officers in Richmond received a tip that a man had said he wanted to harm Muslim community members, the Contra Costa Times reported (

Detectives said they learned the man might have made an explosive device at his home.

Authorities evacuated nearby residents Sunday before serving a search warrant at the man’s house and destroying the possible device. No one was injured.

Police on Monday identified the man as 55-year-old William Celli, a self-employed plumber.


Information from: Contra Costa Times,