The latest from the testimony of a key defendant in an organized crime investigation centered on San Francisco's Chinatown (all times local):

12:45 p.m.

The defendant at the center of an organized crime investigation in San Francisco's Chinatown is acknowledging his criminal past during court testimony but says law enforcement hounded him after he tried to go straight and get a job.

Raymond "Shrimp Boy" Chow took the stand for the first time Monday in the federal racketeering, money laundering and murder trial against him.

Prosecutors say Chow took over a Chinese fraternal group with criminal ties after having its previous leader killed. The investigation led to the conviction of a state senator.

Chow says he ran an escort service, dealt cocaine and was involved in a street gang. He said when he was released from prison in 1989, he got a job at a supermarket and law office but continued to face scrutiny from police.