Five people were wounded when a man walked into a Hmong festival Saturday night in Tulsa, Okla., and began shooting with a pistol, according to local media reports.

NBC station KJRH of Tulsa said the shooting occurred just before 8 p.m. local time, when 300 to 400 people were at the event, sponsored by the Hmong American Association.

Police said two people were shot in the torso and three others were wounded in the arms or legs, KJRH reported. Police Capt. Mike Williams told The Associated Press that one victim was in critical condition and another may lose a leg.

He said the motive for the shooting at the Green Country Event Center was unknown. He said two suspects were arrested when they were spotted driving away in a vehicle with its lights out. A semiautomatic handgun was recovered, Williams said, and KJRH reported that it was a .40-caliber.

The Tulsa World newspaper reported that a suspect was caught after being spotted by a police helicopter.

Nhia Vang, 75, told reporters that the gunman opened fire six feet away from him after a toast, the World reported. One bullet went through his shirt, but he was uninjured – although the police took the garment as evidence, the World said.