Tragedy struck Friday night, Aug. 22, when a man was shot and killed backstage during a Wiz Khalifa concert.

According to TMZ, around 11PM PT, shots were fired during Khalifa's show backstage at the Shoreline Amphitheatre in Mountain View, CA. Khalifa was on stage performing when the shots were fired.

The site reports that an argument erupted between the gunman and victim, and at least five shots were heard. The two were reportedly in a "dark hallway" and surveillance video may not be helpful in determining what happened. There were reportedly two witnesses, according to the site.

The gunman has not been caught yet and the victim was declared dead as a result of injuries from the shooting.

The police reportedly detained everyone backstage for three to four hours. Neither men are believed to have any connection to Khalifa.

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