NAMPA -- The Nampa Police Department is asking for the public's help tracking down a man suspected of being involved in a shooting that sent a child to the hospital Wednesday night.

Police say 19-year-old Mario Garza was one of two men who opened fire in the parking lot of the Walmart store on East Franklin Road.

The shooting happened at about 10:15 p.m., as people were gathering in the lot to watch the fireworks show from the nearby God and Country Family Festival.

According to investigators, Garza and 21-year-old Ezri Garcia got into an argument that escalated to a fistfight before both men pulled out guns and stated shooting at each other.

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A bullet struck a 10-year-old girl in the shoulder. Police say the child was in the lot with her family to watch the fireworks, and didn't know either suspect.

The girl was taken to a local hospital for surgery, but her injuries are not considered life-threatening.

Garcia was arrested at the scene, but Garza remains on the loose. Police have not released which man fired the round that hit the girl. The shooting was gang-realated, according to prosecutors.

He is described as a Hispanic man with brown hair and brown eyes, standing about 5’11” and weighing about 150 pounds. He has a slender build.

A warrant has been issued for Garza's arrest on charges of aggravated assault with a gang enhancement and rioting.

Garcia is charged with aggravated battery with an enhanced weapons charge, aggravated assault, and riot, and is currently held on a $1 million bond.

Anyone who spots Garza or has information on where he is is asked to contact the Nampa Police Department at 465-2257.