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Justin Bieber tour bus target of pot bust at Canadian border

Justin Bieber is seen in this undated file photo.

July 30, 2013 12:00:00 AM PDT
U.S. border agents found marijuana on a bus with singer Justin Bieber's tour as it crossed into Detroit from Windsor, Canada.

Official say the bus was stopped on Sunday as it attempted to enter the U.S. on the Ambassador Bridge.

The singer was not on the bus at the time. He performed later that night at Joe Louis Arena.

A police dog apparently indicated the presence of drugs on the bus. The driver was cited and its passengers were allowed to go.

The Associated Press contributed to this report.