Shia LaBeouf’s mystery passenger in this weekend’s DUI-related accident has been revealed as Australian actress Isabel Lucas.

Isabel co-stars with Shia, 22, in the upcoming feature film Transformers: Revenge of the Fallen, presently in production.

According to US Magazine, Isabel, 23, was in the passenger seat when Shia’s Ford F-150 pickup made an illegal turn and was struck by another car in Hollywood early Sunday.

She and the driver of the other vehicle were treated for minor injuries at Cedars-Sinai Medical Center in Los Angele and later released.

Shia, who remains hospitalized after severly injuring his hand in the collision, has been arrested on suspicion of DUI, according to a Los Angeles County Sheriff’s spokesman.