FBI agents raided more than a dozen card rooms in the Bay Area Wednesday.
They concentrated on San Bruno's Artichoke Joe's and Emeryville's "Oaks Card Club."
They were looking for people, documents and other evidence related to gangs, gambling and money laundering.
Everyone inside was searched and not allowed to leave until their identities were confirmed and police could make sure they had no outstanding warrants.
No one was arrested.
