Singer Chris Brown poses for photographers with two of the four BET Award he won at the 2011 BET Awards in Los Angeles, California, June 26, 2011. (Xinhua/Reuters File Photo)

U.S. R&B star Chris Brown faces new potential troubles with the law after allegedly snatching a woman's iPhone as she tried to snap his picture outside a Miami Beach nightclub, according to media reports Friday.

No charges have yet been filed as the case remains under investigation.

"My prosecutors are currently speaking with witnesses and reviewing all of the materials supplied by Miami Beach Police," said Miami-Dade State Attorney Katherine Fernandez Rundle. "Only after these reviews have been completed would any type of action be considered or taken."

The Miami Beach police incident report provided by Christal Shanae Spann accuses the R&B star of "robbery by sudden snatching" outside the Cameo nightclub.

Brown was sentenced to five years probation after assaulting ex-girlfriend Rihanna before the 2009 Grammy Awards. The pair have become friendly again and recently collaborat ed on songs.