(CNN) -- Three people were shot at Colorado's historic Red Rocks Amphitheatre after a concert by the rapper Nas late Thursday night.
Their injuries were not life-threatening, and the wounded were taken to a local hospital, the Jefferson County Sheriff's Office said.
The shooting took place in the parking lot of the theater after the show.
Officials have released very few details about the incident, other than to say the suspect was at large.
The amphitheater was host to "Feed the Rocks," featuring rappers Nas, Flying Lotus and Schoolboy Q.
Following the shooting, the venue was shut down, with no one allowed in or out.