snoop dogg*TMZ is reporting that Snoop Dogg was arrested for possession of Marijuana this past weekend in Texas after a drug-sniffing dog uncovered the stash on his tour bus. They saw you comin’, Dogg.

Snoop’s tour bus was stopped at a border patrol checkpoint in Sierra Blanca — a small town in West Texas where Willie Nelson was popped for weed back in 2010.

We’re told the border patrol ran a standard inspection of the bus with the dog … when the animal alerted the agents to a possible hit in a waste basket in the back of the vehicle.

The agents claim they found a red prescription bottle with several joints inside. We’re told the bottle contained under a half-ounce of weed.

Cops say Snoop admitted the dope belonged to him. Snoop has a prescription for cannabis in California, but law enforcement tells us there is a zero tolerance policy for weed in Texas … regardless of his status in other states.

Snoop was issued a citation for misdemeanor drug possession and released.

Attempts to reach Snoop’s rep were unsuccessful.