A man who shot at a commuter three times in a Dallas road-rage incident Tuesday evening drove off and remains at large, police say.

The two motorists involved were headed south on Interstate 35E around 6:15 p.m. when they began arguing, Dallas police spokeswoman Tamika Dameron said. It was unclear what sparked the argument.

The gunman pulled up alongside Daniel Rodriguez Jr. and yelled at him to ask if he had a problem, Rodriguez's son Daniel Rodriguez III said. The two drivers continued yelling, but Rodriguez was on a phone call and eventually began smiling and waving in response, said his son, who was not in his father's vehicle.

The other driver pulled behind Rodriguez, following him closely in the heavy traffic, the son said.

The man then moved into the lane to the right of Rodriguez's vehicle and fired three shots at his car, Dameron said. Rodriguez, the only occupant, wasn't injured.

1 / 3Bullet holes in Daniel Rodriguez Jr.'s vehicle.(Daniel Rodriguez III) 2 / 3Bullet holes in Daniel Rodriguez Jr.'s vehicle.(Daniel Rodriguez III) 3 / 3Bullet holes in Daniel Rodriguez Jr.'s vehicle.(Daniel Rodriguez III)

The shooter exited I-35E on Regal Row, and Rodriguez pulled over a few blocks south to call police, his son said.

The shooter was driving a black Toyota 4-Runner SUV and hasn't been identified, according to Dameron.

Anyone with information about the case is asked to contact police and reference case No. 005281-2019.