Sources told the gossip site that Los Angeles authorities are investigating death threats, though its unclear whether the callers said anything more specific.
Geragos represented Brown in the aftermath of his assault on then-girlfriend Rihanna in 2009. In April, he told Extra that the 24-year-old singer has learned from his mistakes.
I’ve known him, obviously, since he first came to me over the whole Rihanna case. I’ve watched him over the past four years. I’ve talked to Rihanna, and she has seen, as I have seen, a monumental change in him.
Brown is scheduled to perform at Sunday night's Billboard Music Awards.
Celebrity Breakups and divorces of 2014 [PHOTOS]