Rihanna's Tour Trucks Stopped at Canadian Border

"This means, the entire production could potentially start at a later time," she tweets

Oh, na na.

Rihanna's Diamonds World Tour hit a roadblock Monday, at least according to her Twitter.

"They held my trucks at the border!!!" Rihanna tweeted, presumably referring to the border between the United States and Canada. "This is not a good luck for Winnipeg! My stage is in those trucks, disassembled!"

"This means, the entire production could potentially start at a later time," she added. "#staytuned #WINNIPEG #tourlife #DiamondsWorldTour"

Just last week, Rihanna's tour bus was stopped by U.S.Border Patrol when they thought they smelled marijuana. A drug-sniffing dog found a small amount of marijuana on one of the passengers (not Rihanna), and a civil penalty was assessed. The buses were then allowed to continue on their way to the U.S.

Rihanna (fingers crossed!) is scheduled to perform Monday night at Winnipeg's MTS Centre. Her rep had no comment on the little setback.