Justin Bieber just can't seem to catch a break on his "Believe" world tour.

The singer performed at the FNB Soccer City stadium just outside of Johannesburg, South Africa, on Sunday and after his concert thieves broke into the stadium's safe and made off with an estimated $108,000. The cash was from ticket sales for Bieber's Sunday night show and for Saturday night's Bon Jovi concert, according to the BBC.

The well-orchestrated heist is believed to be the work of just two thieves who spent days chiseling into the stadium's vault, using ropes to get in and out. The crime wasn't discovered until Monday morning.

"The money was taken from the building and they only realized today," an officer from Soweto's Booysens police station said on Monday. "We don't know how many people were involved as we are still gathering evidence."

South African police spokeswoman Katlego Mogale added, "The suspect had gained entry through the roof. They broke the tile of the bathroom between last night (Sunday) after the concert and this morning."

Bieber's tour has been plagued with issues, from a collapse on stage in London, to smoking pot in Amsterdam and leaving a controversial note in the guest book at the city's Anne Frank Museum, to abandoning his pet monkey in Germany.

During Sunday night's show Justin pulled his mom, Pattie Mallette, on stage with him during the Mother's Day show and dedicated his single, "One Less Lonely Girl," to her.

"I love my momma . Great night tonight," he tweeted after the show.