LOS ANGELES, California (X17online) - Australian actress Isabel Lucas was in the passenger seat of Shia LaBeouf's Ford F150 when it collided with another vehicle and flipped over early Sunday morning, according to the NY Daily News. Lucas, 23, who is LaBeouf's co-star in Transformers 2, has been dating actor Adrian Grenier for several months.

A source working on the film told NY Daily News, "She [Lucas] was in the car....They're friends." The source added that the two have been working late nights on the set and most likely were together to "let off some professional steam." Lucas sustained minor injuries from the crash, and was treated and released from Cedars-Sinai Medical Center on Sunday. The source said Lucas would return to the set on Monday, but that movie production will work around the estimated month LaBeouf needs to recover from his "extensive" hand surgery.

The Los Angeles County Sheriff's department charged LaBeouf, 22, with a misdemeanor DUI, and the actor could face another misdemeanor charge depending on the results of his blood-alcohol test.

In a recent Details interview, LaBeouf discussed his struggles with alcohol as well as his family's predisposition for addiction. LaBeouf also told the magazine, "I don't know how to have one drink," and revealed that his father is a former heroin addict, and that father and son "would drink together and smoke together."

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