U.S. Authorities found marijuana and drug paraphernalia on one of Justin Bieber's tour buses during a stop at the border between Michigan and Canada, according to TMZ.

Bieber was not on the bus. He's becoming wily, that one.

Chief Customs and Border Protection Officer Ken Hammond told the website officers halted the bus at the Ambassador Bridge -- separating Windsor, Canada, and Detroit -- after a drug-sniffing dog detected the presence of pot. You know, the weed, grass, the herb, the reefer, the Maui Wowie, the ganja, the chronic, the Mary J., the ...

Anyway, Hammond said a search of the bus revealed marijuana and drug paraphernalia, both of which were seized by officers, who gave the driver a citation. Everyone was then released.

The incident comes a few months after a Bieber tour bus was allegedly found with marijuana in Sweden.

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