Brown, 26, has not been arrested but is considered a suspect, the Las Vegas Metropolitan Police Department told in a statement, according to The Hollywood reporter.
On Saturday at 10:20 am, police responded to a report of battery that occurred inside a Palms hotel suite. When police arrived, the female victim appeared to have minor injuries due to battery.
According to the police, the victim was attending a party inside a hotel room where an altercation took place over a cell phone. The victim alleges that she was battered by Brown when she took out her cell phone to take a picture of the singer, who then proceeded to take her phone from her.
"Her claim that she had her phone in her possession inside the after party and was able to take a photo causing an altercation with Chris Brown is a complete fabrication."
Brown is in Las Vegas for the New Year's weekend.