SAN FRANCISCO (KPIX) — The Federal Bureau of Investigation raided a home in San Francisco’s Visitacion Valley neighborhood on Friday and sources told KPIX 5 that the joint effort with SFPD had to do with guns and drugs.

Among those detained in the raid was Stanislav Petrov — who was seen in a viral video being beaten by Alameda County deputies last November.

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San Francisco police say shots were fired around 2 a.m. Friday outside the multi-unit complex on Teddy Ave. and a male victim was struck and driven to a hospital by friends with life-threatening injuries.

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Four people were arrested, including Petrov, who has had at least four other run-ins with the SFPD in March.

The FBI/SFPD operation lasted for several hours.

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Stanislav Petrov