So many reports have flooded in in the last 30 minutes regarding Lindsays most recent (as of 2:30 am today) police stop that we can't quite make heads or tails of it. Here's what we know from TMZ:

Lindsay Lohan was arrested for drunk driving in Santa Monica early this morning -- her second bust in less than a year.

According to wire reports, 21-year-old Lohan was nailed around 2:15 AM near Pico Boulevard and Main Street early Tuesday morning.

Law enforcement now says Lohan was stopped after cops got a call of a vehicle being chased by another vehicle. The chasing vehicle was being driven by Lohan.

Lohan was driving a white Denali. She was chasing a Cadillac Escalade.

She was initially suspected of driving under the influence of alcohol. A field sobriety test was conducted and she was subsequently arrested for DUI.

At the station a search of her person was conducted and Cocaine was found in her pants pocket.

A breath test was conducted and her blood alcohol was between .12 and .13.

Developing..........