The shooting took place Thursday night and injured three people after the Nas concert at the Morrison venue.
The rapper, whose real name is Quincy Hanley, was inside the white SUV that fired upon but he wasn't injured, Jefferson County Sheriff's Office spokesman Mark Techmeyer told the Los Angeles Times.
The driver of the SUV fled the parking lot and were found later at 6th Avenue and Kalamath Street by Denver police. The injured were taken to Denver Health Medical Center with non-life-threatening injuries.
In a news release, the sheriff's office said it wasn't clear if Quincy was the target of the attack.
No arrests have been made in the shooting, and police said they only have a vague idea of what the suspect looked like.