Chris Brown has received death threats.

The R&B singer's lawyer Mark Geragos has asked the Los Angeles Police Department to investigate several anonymous calls made to his office, which he believes could pose a serious danger to the singer's safety.TMZ claims Mark immediately reported the threats to the LAPD, who are currently investigating the matter. It is not yet known what specific comments were made.

Mark represented the "With You" singer during his own police ordeal in 2009, when he was arrested for assaulting his on-off girlfriend Rihanna. Chris, 24, is still on probation for the incident, and was accused in February not completing the 180 days of community service ordered when he pleaded guilty to the charges.

Meanwhile, the singer called off his turbulent romance with Rihanna earlier this month after a public Twitter war. Although friends believe the fiery couple will get back together, Chris is said to have been spending time with his ex-girlfriend, model Karrueche Tran. "He's been initiating contact with her, not the other way around. I wouldn't say Karrueche and Chris are together but they are talking and kicking it," an insider recently explained.