HOUSTON – Police are investigating a shooting at a tire shop in Southwest Houston, where a 7-year-old boy has been wounded by gunfire.

Police said the shooting occurred in the 1300 block of South Loop West, when the boy's father and an employee were arguing and a gun went off.

The boy was shot in the arm and the father took him to Texas Children's Hospital.

Police arrested the employee, who faces charges of aggravated assault with a deadly weapon.

In a tweet, police said the boy's wound is minor, and he's expected to be okay.