DETROIT (AP) — For the second time this year, authorities have found pot on a bus connected with Justin Bieber’s tour. The most recent episode was Sunday — as a Bieber tour bus crossed into Detroit from Windsor, Ontario. U.S. border agents say a police dog indicated there were drugs aboard — and a search turned up a small amount of pot and drug paraphernalia.

Bieber wasn’t on the bus at the time — and performed later Sunday night at Joe Louis Arena in Detroit. The bus driver was cited and the bus and passengers were allowed to go. Earlier this year, when Bieber was performing at a venue in Sweden, authorities searched the singer’s bus and found pot.

The bus was empty, Bieber was performing inside — and no arrests were made. Then, there were the pictures of The Beeb on the Web which appeared to show him toking up. Bieber has said reports that he is acting out are lies.