Three people were injured at the concert at Denver's Red Rocks Amphitheater

Rapper Schoolboy Q was detained by police in Denver after three people were shot outside a Nas concert last night (June 19).

Police state that the shooting took place outside the Red Rocks Amphitheater following a performance by the US rapper. Schoolboy Q and Flying Lotus also performed on the same bill at the show, which was a benefit for GRASP, a gang-rescue and support project. Schoolboy Q was detained by police after the incident, but not arrested, reports Pitchfork.

The local sheriff’s official Twitter announced that none of the evening’s performers were victims of the shooter, writing: “None of the shooting victims at Red Rocks were performers at the concert. One victim has been released from the hospital”. The Skrillex show set for tonight (June 20) at the venue will go ahead as planned, however, the south parking lot is closed as police continue their investigations.

The venue was shut down by police after the incident, which is reported to have happened directly after the gig ended. Thousands of fans were not allowed in or out of the venue’s car park. Authorities say they are looking for a black male with a rifle.

Speaking to the Denver Post, Jefferson County Sheriff’s Office spokesperson Mark Techmeyer said: “We’re trying to figure out what happened.”

It is reported that all three victims left the venue together in a white vehicle with two other people after the shooting took place. Police eventually caught up with them and they were transported to a local hospital.