Las Vegas authorities are investigating an allegation that singer Chris Brown struck a woman and took her phone after she tried to take a picture of him. A crime report lists Brown as a suspect in a case investigating a misdemeanor charge of theft and a misdemeanor charge of battery. Brown's publicist Nicole Perna said the allegation is "unequivocally untrue" and that the woman making accusations was at a private party in a Las Vegas hotel room and was escorted out for being disruptive and "out of control." "Once she was in the hallway, while waiting for Chris Brown's security to bring out her phone," Perna said, "she had a total meltdown -- throwing her purse to the ground and claiming that she 'could buy everyone in the hotel' -- as witnessed by numerous people waiting to get into the party. The Palms Casino Resort security also saw her wild behavior via hotel security cameras and immediately came up to the hallway to escort her out of the hotel."