Chris Brown is currently serving 90 days in rehab for anger management, while Chris has so far been obeying the rules of the facility, giving up smoking weed, and taking the necessary prescribed medications, there's one rule that may have not been clear enough for him-- no partying with Trey Songz!.

Brown was granted a pass out of rehab on Sunday, where he was to meet with his attorney before returning to the center. The R&B singer took a detour however, eventually landing at a lively Trey Songz Super Bowl party.

Sources close to the singer report that he was only present for 10 minutes, and only made the trip because he believed the party was for charity, but either way, he never declared it when leaving rehab-- which could get him in trouble.

Watch a clip of Chris at the turn up function below.