U.S. border agents say they found marijuana on a bus with singer Justin Bieber's tour as it crossed into Detroit from Windsor, Canada.
A spokesman for the Ambassador Bridge confirmed that the bus was stopped Sunday as it attempted to enter the U.S.
The singer was not on the bus at the time and performed later that night at Joe Louis Arena.
A police dog indicated the presence of drugs on the bus and that drug paraphernalia and a small amount of marijuana were found. The bus driver was cited and that the bus and its passengers were allowed to go.