Golfer Robert Allenby has been arrested outside an Illinois casino, but bizarrely has claimed not to know why he was detained.
He was arrested for disorderly conduct and trespass at around 2:30am on Saturday morning outside Jumer's Casino in Rock Island.
The 45-year-old Aussie sports star missed the cut at the John Deere Classic golf tournament on Friday before being arrested.
"Robert Allenby was arrested for disorderly conduct and criminal trespass," a Rock Island County Police Department spokesperson told AAP.
"He was transported to Rock Island County Jail and we do believe he has bonded out."
Allenby's mugshot has since been released by the local jail.
But Allenby told the USA Today Sports on Sunday that "nothing happened" aside from playing cards at the casino with some friends.
"I don't know anything that's going on, so you can say whatever you want," he said.
"There's nothing to be said or done about it."
When asked about the charges, he replied, "I have no idea, mate. No idea."
According to a Rock Island County Jail spokesman, the golfer spent less than one hour in custody before he paid a $US 1,500 release bond.
This is not the first incident to involve Allenby. In January last year, he was found with severe bruising in Hawaii after missing out on the Sony Open tournament. Allenby claimed to have been dining at a restaurant with friends before being abducted, robbed and beaten.
Following scrutiny, an arrest was made and a Honolulu man charged for using Allenby's credit cards.
He is reportedly back home in Florida.