In the photographs submitted to the celebrity gossip website, Bieber can be seen sitting on a couch and interacting with a group of people in a hotel room while holding what appears to be a marijuana cigarette.
The photos were taken Wednesday, one day after a paparazzo was killed while trying to take photos of Bieber's Ferrari in Los Angeles, TMZ reported.
Lil Twist was driving and Bieber was not in the car at the time of the incident.
The sources, whose names were not reported, told TMZ Bieber told people at the party he was tired because he had been staying up late recently. The conversation later turned to where to get late-night fast food.