SAN DIEGO -- Three people are accused of taking two underage girls from Phoenix to San Diego for prostitution.

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Images: 3 Indicted On Child Sex Trafficking, Prostitution Charges

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One of the accused men was in federal court Tuesday defendants in downtown San Diego.

Uawndre Larue Fields, dressed in a white jumpsuit, went before a magistrate judge during the afternoon. According to the federal indictment, which was unsealed Thursday, Fields is facing two counts of child sex trafficking and two counts of interstate transportation of a minor for prostitution.

The FBI said that agents, acting on a warrant, arrested Fields on Wednesday night.

The indictment states that Fields and two other defendants, Depaul Brooks and Julia Margarite Fonteneaux, recruited a pair of underage girls and took them across state lines to engage in prostitution in April of 2006.

The indictment was filed in the District of Arizona

A federal defense attorney representing Fields suggested that there may be a case of mistaken identity in the case. The magistrate set a removal hearing for Fields on May 31. At that hearing, the magistrate explained, the government must prove that Fields is the person on the indictment.

The judge declined to set bail, citing the questions over the defendant's identity.

A woman outside court who identified herself as Fields' girlfriend said Fields lives in San Diego but declined to comment further on the case.