UFC Hall of Famer BJ Penn is under investigation for DUI, according to a report from the Hawaii Police Department.
Penn was hospitalized Feb. 7 after a one-vehicle accident in Hilo, Hawaii. He hasn't been charged.
A witness said they saw a black truck speeding, losing control, and flipping into an embankment in front of a shopping mall, according to the police department. Police found a black Toyota Tacoma truck against two poles outside the Prince Kuhio Plaza.
In addition to the traffic investigation, police are investigating Penn for operating a vehicle under the influence of an intoxicant, consuming or possessing liquor while operating a motor vehicle, and inattention to driving.
When the investigation is completed, it will be sent to the prosecuting attorney's office "for screening and potential charging," according to the police.
Penn's condition is unknown as of Tuesday night, according to USA Today.
The UFC released Penn, a former lightweight and welterweight champion, last September after video surfaced of him getting dropped in a bar fight in Hilo.
In his last UFC fight, Penn lost to Clay Guida by unanimous decision in May. It was his seventh straight defeat.