INDIANAPOLIS -- Police say a car-wash customer shot and injured an armed male who apparently intended to rob him at the south-side business Sunday night.

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Man: Teen Fired At Me

A 17-year-old suspected of being the would-be robber was arrested after he sought treatment for a gunshot wound to the arm at an area hospital, police said.

The customer, Dave Humphries (pictured, right), said he exchanged gunfire with the male at a car wash on the 4200 block of South Meridian Street. Humphries said the male had approached him with a rifle as Humphries attempted to wash his own vehicle.

"He looked at me and said, 'I'm going to shoot you,' " Humphries told RTV6's Jack Rinehart. "I dropped the (car-wash) wand and I said, 'Let me get my wallet.' And I reached inside my jacket pocket and retrieved a revolver I had.

"There (were) two shots fired at me, and I just emptied the gun."

Humphries was not hurt. The wounded person ran away, police said.

Police said Humphries, who has a proper firearms license, will not face charges because he acted in self-defense.

Indianapolis police Detective Chris Labanauskas said Humphries was fortunate.

"It kind of helped us out a little bit -- we have somebody off the street that could have done harm to somebody else," Labanauskas said. "But the victim was still extremely lucky."

The 17-year-old's mother, Kelly Army, told Rinehart she didn't blame Humphries for firing.

"I would have done the same thing. I would have shot back, too," Army said.

The teen, whose name wasn't available, was being held Monday in the Marion County Jail on a charge of armed robbery. Bail was set at $10,000.