Samantha Ronson Smirks in DUI Mug Shot
08/02/2011 AT 03:00 PM EDT
The celebrity deejay put on a smirk in her mug shot following her arrest at 10:31 a.m. Monday in the California desert for investigation of driving under the influence.
Lindsay Lohan's ex was pulled over by the California Highway Patrol outside the town of Baker, Calif., 180 miles northeast of Los Angeles, when she was clocked by radar driving 89 mph.
Ronson, 33, the driver, "displayed signs of alcohol intoxication" and after field sobriety tests was arrested, booked at the sheriff's jail and released.
"She was cooperative throughout the entire contact," says the police report.