LINCOLN, Neb. (AP) — Nebraska authorities say they caught a 31-year-old Minnesota man with nearly 30,000 marijuana pills in a U-Haul trailer attached to his car.

Lancaster County Sheriff Terry Wagner says police noticed on Tuesday that Ryan Scott Cooper, of Plymouth, Minnesota, didn’t have a license plate on the front of his car when he was getting gas at a station in Lincoln. He says a police dog then signaled the smell of drugs coming from the attached trailer.

Officials say they searched the trailer and found 29,400 capsules filled with cannabis oil and 322 Adderall pills, along with other drugs and equipment to make the oil.

Cooper was arrested on suspicion of breaking four drug laws, including two felonies. An attorney for Cooper couldn’t be located.