X17 was first to break it and has a ton of details:

The Beverly Hills Sheriff's Department received a call around 5:30 am Saturday morning about a driver having lost control of her car at the corner of Sunset Blvd. and Foothill Dr., according to Sergeant Mike Foxen of the BHSD. No one involved in the accident was on the scene when officers arrived. The only person on the scene was the witness who called to report the accident, who had recognized the driver of the Mercedes SL 65 AMG black convertible as the young actress.

We just wrapped up our live, online feed of the Beverly Hills Sheriff's Department press conference regarding Lindsay Lohan's DUI charges and here's what we learned:

She had coke in the car! At the presser, it was announced that narcotics were found in the car by officers at the time the vehicle was towed and impounded.