Indianapolis ? Two-time Indianapolis 500 champion Al Unser Jr. will seek treatment for alcohol abuse and won’t race for the next several weeks.

Unser revealed his plans Thursday, just hours after prosecutors said he would not face criminal charges on accusations that he hit his girlfriend and left her stranded along a highway. He was arrested on July 9.

“I have a problem with alcohol abuse,” he said. “Nearly ever poor choice that I have made in my life was under the influence of alcohol. I don’t understand why I have a problem, but I know I have to straighten out.”

Unser said he made his decision to enter an unspecified treatment center after meeting with car owner Tom Kelley and Gregory Gyllstrom, chief executive of Unser sponsor Corteco.

The team said that Unser would miss at least the next two IRL events and would be replaced by test driver Tony Renna. The earliest Unser would return is mid-August.

IRL president Tony George said the league does not contemplate any action against Unser.

Marion County Prosecutor Scott Newman said Thursday there was not enough evidence from the initial 911 call, statements and photographs to obtain a conviction against the 40 year-old driver from Albuquerque, N.M.