A pizza delivery man who was taking an order to a house in East Texas pulled out a gun and opened fire on two would-be robbers, police said.

One of the alleged robbers was hospitalized after getting shot in the back, Lufkin police said. The Papa John's pizza delivery man, who's licensed to carry a handgun, wasn't hurt.

The shooting was Tuesday night, after the delivery man walked up to a house and rang a doorbell, Lufkin police said. It turned out the house was vacant and two armed men approached him from the side of the house, The Lufkin Daily News reported Thursday. The delivery man drew a .22 caliber Derringer and fired two shots, and the assailants ran away, police said.

It appears unlikely the delivery man will face any charges since he "was defending himself at the time of the shooting," Lufkin Police Lt. David Young said.

A call placed to the restaurant and a call to the chain's corporate headquarters in Louisville, Ky., weren't immediately returned Thursday.

Police said Johnx R. Greer, 18, was arrested at a hospital where he was treated for a gunshot wound to the back. He's been charged with aggravated robbery and was being held in the Angelina County Jail on a $100,000 bond. His attorney, John Tunnell, did not return a call Thursday.

The other suspect hasn't been found.