For reasons as murky as some of his off-stage shenanigans, Justin Bieber has called off the rest of his Purpose Tour, including the Aug. 18 concert at U.S. Bank Stadium. No rescheduled dates are expected, so tickets will be refunded for the Minneapolis show and all other venues at the point of purchase.

"Justin loves his fans and hates to disappoint them," reads a statement from Bieber's publicists, who simply cited "unforeseen circumstances" as the reason for the cancellations. Here's what else they had to say:

"He thanks his fans for the incredible experience of the Purpose World Tour over last 18 months. He is grateful and honored to have shared that experience with his cast and crew for over 150 successful shows across 6 continents during this run. However, after careful consideration he has decided he will not be performing any further dates."

Bieber, 23, has yet to make any comment himself on social media or elsewhere about the 15 cancelled shows, which also included dates in Tokyo and his native Ontario's capital city, Toronto. The tour actually started last year and has already completed 154 dates, counting last summer's prior Minneapolis gig at Target Center.

It's likely the kid was getting sick of touring, but the mass public may have also been getting a little tired of Bieber. While ticket sales to the U.S. Bank Stadium show started out hot, they have cooled significantly in recent months. A search on Stubhub today found ample floor seats near the stage available for just over $100, while upper-deck tickets were plentiful for around $25.

Stubhub and most other online resale sites will refund all purchases, but fans who paid jacked-up prices to private ticket scalpers could eat the mark-up costs on those tickets.