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Chris Brown

INFphoto.com

Chris Brown has taken a gamble on Las Vegas.

E! News has learned that Brown, who is being investigated by the Los Angeles District Attorney's Office for allegedly beating up his R&B star girlfriend, Rihanna, is holed up at the Hard Rock Hotel and Casino in Vegas. He's staying in a suite on an upper floor of the hotel.

According to a Sin City source, "They had to kick out any paparazzi that were around and get him tons of security to sneak him in."

Hotel management, however, says it "cannot officially confirm he is on the property."

There has been much speculation as to the 19-year-old Brown's whereabouts since he was seen leaving an L.A. jail Sunday night after being booked on suspicion of making criminal threats. He had been spotted at a West Hollywood hotel and there was an unconfirmed report he had flown to be with his family in Georgia.

His case was turned over to the D.A.'s office Tuesday morning; prosecutors have asked for further investigation into the incident before they decide whether to press charges.

Reporting by Ken Baker and Claudia Rosenbaum