At least five people were wounded at Fiesta Nightclub in San Jose, California, and all were treated at hospital, reported Ace Showbiz.
Brown was performing his song 'Loyal' on stage when the incident happened. The R&B singer was quickly rushed to safety by his entourage as chaos broke out on the dance floor.
He was not injured as he suggested in a now-deleted Twitter post, "I'm 100."
According to local TV station KRON4, no suspects have been named. Police are still questioning a number of people to investigate the motive behind the shootings.
Moreover, he was involved in a 2013 infamous brawl with Drake over ex-girlfriend Rihanna.