Former "Celebrity Rehab" star Shifty Shellshock was arrested for possession of rock cocaine last night after getting into an argument with his girlfriend at a "Ross" store.
Sources told TMZ the singer and his girlfriend were arguing inside of the Ross when things turned physical.
Cops searched Shellshock and found rock cocaine and arrested him for possession of a controlled substance.
We're told Shifty is still in police custody.
He's appeared on 2 installments of "Celebrity Rehab" and 2 installments of "Sober House" to deal with his struggles with drugs.
