DENVER (AP) — Authorities near Denver are searching for a man with a rifle who shot and wounded three people at the end of a rap concert last night.

The shooting took place at the popular Red Rocks outdoor amphitheater. No motive was released, but a sheriff’s spokesman says the attack didn’t appear to be random.

The victims’ injuries weren’t life-threatening, and one of them has been discharged from the hospital.

The sheriff’s spokesman says the victims didn’t include any of the performers at the concert, which featured Nas, Schoolboy Q and Flying Lotus. The concert was held to benefit three groups, including the Gang Rescue and Support Project of Denver.

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119-a-08-(Mark Techmeyer, public information officer, Jefferson County Sheriff’s Office, in AP interview)-“people were shot”-Jefferson County Sheriff’s spokesman Mark Techmeyer says authorities are still looking for the person responsible for a shooting at a concert near Denver. (20 Jun 2014)

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122-a-12-(Mark Techmeyer, public information officer, Jefferson County Sheriff’s Office, in AP interview)-“at this time”-Jefferson County Sheriff’s spokesman Mark Techmeyer says authorities are just beginning their investigation. (20 Jun 2014)

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APPHOTO COBL101: A man works out inside the amphitheater at Red Rocks Park, in Morrison, Colo., Friday, June 20, 2014. Authorities were searching Friday for a gunman who shot and wounded three people at the end of a benefit concert at the popular outdoor amphitheater near Denver on June 19. (AP Photo/Brennan Linsley) (20 Jun 2014)

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