Justin Bieber tour bus caught with marijuana at Canadian border

Justin Bieber tweeted "I'm a lucky guy" on Tuesday morning — and it may have been because he narrowly escaped a drug bust over the weekend.

The embattled pop star’s Believe Tour has been riddled with headline-grabbing bad boy antics since the beginning, the latest of which came Sunday as Bieber was on his way to perform in Detroit.

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.

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.

The 19-year-old singer was completely separate from the situation, likely in another vehicle, and was able to perform later that night at the Joe Louis Arena.

Hammond 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.