A brief shootout erupted at a Cupertino all-ages rap concert Friday night, injuring one and leading to an arrest and the seizure of two guns, according to the Santa Clara County Sheriff’s Office.

One shooter is unaccounted for and remains at large, authorities said.

Sheriff’s deputies got a report of gunfire around 10:30 p.m. Friday at the music event at the Homestead Bowl and X Bar at 20990 Homestead Road, Sgt. Richard Glennon said.

The venue was hosting a rap concert headlined by an up-and-coming Oakland rapper when Glennon said “at least two people began shooting at each other.”

One adult victim was struck in the leg by gunfire, and was treated at a local hospital for what Glennon described as a non-life threatening injury.

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Sources familiar with the investigation told this news organization that the gunfire was between a person outside the building and another person inside. Shell casings were recovered both inside and outside the venue, the sources said.

Deputies later arrested a suspect believed to be connected to the shooting, and seized two firearms.

“The show went fine,” Homestead Bowl owner Greg Malley said. “People got into the parking lot and got into an argument. There were some people pushing and shoving, someone shot a firearm and hit someone in the leg. The police responded very professionally and defused the situation.”

The Homestead Bowl and X Bar hosts assorted music events throughout the year, from acoustic and country to classic rock and rap. With the aim of trying to ensure a safe, wholesome atmosphere, Malley said he canceled at least four rap shows in the fall after police informed him some of the performers had criminal records.

Several performers were booked Friday night, Malley said, and he had not received any warning that any had criminal records. Malley said he provides security, and had two guards on duty Friday night monitoring the event.

Malley had hoped that Friday night’s all-ages show would draw a mellow crowd.

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“When you do all-ages, normally it’s a very low-key audience,” Malley said, adding he was hoping to provide a “healthy outlet” for rap fans.

Now he’s reconsidering whether he’ll host another rap show.

“We won’t book any more hip-hop,” Malley said. “They can find a healthy outlet somewhere else.”

The Sheriff’s Office has not released the identities of the arrested suspect or the injured person.

Deputies were processing the crime scene Saturday for evidence, and asking witnesses, local neighbors, and concert attendees to come forward with any information or video related to the shooting.

Anyone with information about the case can contact the Santa Clara County Sheriff’s Office at ‪408-808-4500 or leave an anonymous tip at ‪408-808-4431.