Alexis Neiers Arrested -- Black Tar Heroin Found

Alexis Neiers -- star of the E! reality show "Pretty Wild" -- was just arrested for a probation violation ... and law enforcement sources tell TMZ, she was in possession of black tar heroin when they found her.

We're told Neiers never checked in for probation after being released from jail in July ... so this morning, cops decided to pay her a visit at her L.A. home.

Law enforcement sources tell us cops searched the place, discovered black tar heroin ... and immediately placed Neiers under arrest.

Neiers is still on probation for burglarizing Orlando Bloom's L.A. home last year -- so this new arrest could lead to some serious time behind bars.

Calls to Neiers' reps have not been returned.

Credit: TMZ

Lindsay Lohan -- Daddy Benz Over Backwards

Lindsay Lohan's dad went above and beyond to celebrate his daughter's new driving privileges -- in fact, TMZ has learned, Michael Lohan gave her his own Mercedes Benz to drive around in.

As we first reported, the L.A. County Probation Department and officials at the Betty Ford clinic restored Lindsay's driving privileges Monday morning -- and to make it clear he trusts her, we're told MiLo donated his own set of expensive wheels to the cause.

According to sources, Michael dropped the convertible off Monday night at Lindsay's sober living facility -- and Lindsay is free to drive it as she pleases.

Guess that means she'll be picking up the groceries for Thanksgiving.

Credit: TMZ