Two men have been convicted for running a prostitution ring out of San Ramon in 2009 and committing sex crimes against their underage victims.

Duwan Fields, 33, of San Ramon and Claudiens Griffin, 21, of Sacramento were convicted of two counts apiece of pimping a minor into prostitution.

Griffin was also found guilty of pandering, raping and committing lewd acts against on one of the three victims, a 13-year-old girl also known as Jane Doe One. Fields was convicted of having illegal sex with 16-year-old and 17-year-old victims, Jane Doe Three and Two.

Authorities said three runaways were pimped to men by Fields and Griffin from a home in San Ramon over eight days in April 2009.

"It's a really tragic case, you have a situation where three very young runaway juveniles were exploited by people who were involved in a very corrupt operation," said Deputy District Attorney Chad Mahalich.

The woman from Sacramento, Jane Doe Two, testified she was a 17-year-old runaway from foster care when she and two other girls were told they could make money by wearing provocative clothing and posing for photos or appearing on webcams.

She told the court that she only realized she'd fallen into prostitution when she was being driven to her first client.

The woman, now 20, "realized that we actually would be having sex with other people."

"I think it was pretty obvious I didn't want to be there," she said.

Fields and Griffin made between $1,000 and $2,000 a night from the girls' clients, but the girls saw received of that money.

Mahalich said that evidence from trial suggested that the San Ramon case wasn't the first time Fields had pimped girls and that there were more people working for him at the same time, possibly from his mother's home in San Francisco.

"Seems as if it has been going on at least since 2008, but it could have been longer," Mahalich said.

The woman was the first witness at the sex-trafficking trial of Fields and Griffin. Sentencing for the two men is set for May 4.

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