Justin Bieber Tour Bus Seized At Canadian Border, Marijuana Found

To add to the list of trouble for pop superstar Justin Bieber recent reports say U.S. border agents found marijuana on one of the "Baby" singer's tour buses as it crossed into Detroit from Windsor, Canada -- but Bieber wasn't on it.

RELATED: Justin Bieber Spits On Fans From Toronto Hotel Balcony [PHOTOS AND VIDEO]

Bieber tweeted "I'm a lucky guy" on Tuesday morning and he was most likely referring to him narrowly escaping the drug bust. The Biebs has been riddled with bad boy antics since the beginning but this week has been especially rought for the pop star. Just recently the "Baby" singer has been accused of spitting on fans from his balcony.

RELATED: Justin Bieber Gets New Tattoo, See Pic of the Singer's New Ink [PHOTOS]

The bus was stopped as it attempted to enter the U.S. on the Ambassador Bridge, U.S. Customs and Border Protection spokesman Ken Hammond confirmed to the Detroit Free Press.

It is being reported that Bieber was completely separate from the situation, likely in another vehicle, and was able to perform later that night at the Joe Louis Arena.

RELATED: Did Justin Bieber Really Spit On His Fans? Singer's Rep Says TMZ Photoshopped Spitting Pics [PHOTOS]

Hammond also told the Free Press a police dog indicated the presence of drugs on the bus and that drug paraphernalia and a small amount of marijuana were found. He added that the bus driver was cited, and that the bus and its passengers were allowed to continue on.