JOHANNESBURG (AP) – While the artists played, some cats got away – with several hundred thousand dollars. Authorities in Johannesburg, South Africa say thieves were able to crack a safe that was holding money from concessions at a stadium where Justin Bieber and Jon Bon Jovi performed over the weekend. News reports say the thieves climbed down a ladder and used ropes to drop into a lock room where the concession money was kept. It’s believed the ripoff took place early Monday morning, after Bieber performed. Bon Jovi performed Saturday. Authorities say they are looking at the robbery as an inside job.