Rihanna's Diamonds tour--not to mention her image--is in jeopardy once again.

It is a well-known fact that the 25-year-old singer has taken a liking to sharing her love of marijuana via Instagram, but could this smoking habit be the reason for authorities' constant holding up of almost everything connected to the superstar?

Just last week, one of Riri's actual tour buses was searched at the Michigan-Canadian border after an inspector suspected the smell of pot on it. Authorities stopped and searched the bus using a drug-sniffing canine, and they found one of the passengers carrying a 'small amount' of the illegal drug. Good thing, Rihanna wasn't there during the search.

This time, it's her trucks which were held at the border. Though the R&B star wasn't actually riding in any of the vehicles, we know that what the trucks contained was pretty substantial to the success of her tour, and Riri wasn't too happy with the incident.

She took to Twitter to rant about it, saying, "They held my trucks at the border!!! This is not a good look for Winnipeg! My stage is in those trucks, disassembled! #DiamondsWorldTour."

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

And true enough, the incident caused delays to the singer's Winnipeg performance. Her fans were warned that the Winnipeg show might start late due to the border stop. The Barbadian beauty reportedly arrived 90 minutes late for the show, and according to Winnipeg Free Press, she shouted to the crowd, "I just want everybody to say, 'F--- customs. It's 11 o'clock at night... Every last one of you showed up, and you stayed, you make this s--- possible. Thank you so much, I love you... Winnipeg's always so special to me."