The year started out pretty rough for Trey Songz since he was arrested in January after getting into a scuffle with a police officer at the NFL'S AFC championship game.

 Then in May, he was accused of hitting a woman's hand with his car in a road rage incident.

The R&B singer is now being investigated for an alleged sexual assault in Las Vegas. 

As TMZ reports, the Las Vegas Metropolitan Police Department received information on Sunday, November 28 that an incident occured at The Cosmopolitan, a hotel in Vegas.

It's unknown what day the alleged sexual assault happened, and Songz hasn't been arrested. But he's currently cooperating with investigators.

The Virginia native was in Vegas to celebrate his 37th birthday at Drai's Nightclub on Saturday, and he and his crew brought several women back to the hotel.

What do you think will come of the investigation?