Avon police arrested retired race car driver Al Unser early Monday, on a charge of operating a vehicle while intoxicated. He remains incarcerated awaiting bond.

The Hendricks County Sherrifs’ Office says Unser was arrested around 3:20 a.m. The details surrounding his arrest have not been released.

This is not Unser Jr.’s first alcohol-related arrest. He was arrested on drunken and reckless driving charges in New Mexico in 2011 and drunken driving and hit and run in Nevada in 2007.

Unser had been very vocal about his struggles with alcohol, and on May 9 he spoke with students at Hope Academy to share his story of addiction. He said drinking was a demon he faced, and he hopes other will learn from his mistakes.

In 2016, Unser told Indystar that his then-partner left him after his 2011 drunken driving arrest in Las Vegas.

“I was left all by myself and I had never been all by myself,” Unser said. “From my parents’ home growing up to the apartment with (first wife) Shelley, never alone.

Unser told Indystar that he was suddenly forced to cook for himself, do his own laundry and house work and “find out who he was.”

“Believe me, there were a lot of very, very dark days,” he said.

Unser Jr. won the 1992 Indianapolis 500 in one of the most iconic finishes  of all-time when he defeated Scott Goodyear to the checkered flag. He won his second Indycar title in 1994. He has competed in the race 19 times most recently in 2007.

Currently, Al Unser is an executive consultant with Harding Steinbrennar Racing.