FBI investigates underground crime ring

An FBI agent carries away bags of evidence following a search of a Chinatown fraternal organization Wednesday, March 26, in San Francisco. A California state senator was arrested Wednesday during a series of raids by the FBI in Sacramento and the San Francisco Bay Area, authorities said. An FBI spokesman confirmed the arrest of State Sen. Leland Yee, but declined to discuss the charges, citing an ongoing investigation.

SAN FRANCISCO — Beneath the strings of red paper lanterns and narrow alleyways of the nation’s oldest Chinatown lies a sinister underworld, according to an FBI criminal complaint that has stunned even those familiar with the neighborhood’s history of gambling houses, opium dens and occasional gangland-style murders.

The federal charges, which allege a California lawmaker accepted money and campaign donations in exchange for providing official favors and helping broker an arms deal, cast harsh light on Chinatown’s tight-knit network of fraternal organizations and one of its most shadowy characters, Raymond “Shrimp Boy” Chow.