A police spokesman says a gunman has opened fire at a Texas roller rink during a birthday party, fatally shooting at least five people and wounding three others.

Grand Prairie police spokesman John Brimmer told KXAS-TV in Dallas that the shooting happened just after 7 pm at Forum Roller World in Grand Prairie when an argument apparently got out of hand and somebody pulled a weapon.

Brimmer says there was a private birthday party at the rink. He says the gunman was one of the attendees. He says the gunman was shot but wasn’t sure if it was self-inflicted.

The conditions of the three wounded wasn’t immediately known.