Correctional Services said that “matters are under control” at Johannesburg’s Sun City Prison on Wed.
JOSS Stone says for her bad breath is the biggest turn-off in a man.
The 22-year-old singer - who is currently single - would never date a guy with halitosis and expects any potential suitors to have minty fresh mouths.
Joss, pictured, who previously dated Beau Dozier, said: "There's nothing worse than bad breath. I've snogged people with bad breath who smelt of fags and beer and it made me feel sick."
Though the pop star expects her men to be super-clean, she admits her hair isn't always freshly shampooed.
She says: "I once went a week without washing my hair and I did it deliberately because I wanted the natural oils to mend my hair. It didn't smell, surprisingly, and no one commented on it. They probably thought, 'Oh it's just Joss'."
Joss has previously admitted she finds it hard to find a man because she is a "free spirit".
The UK soul singer says: "We love for a man to be protective over us, we love for a man to want and have a little tiny bit of jealousy.
"So you go for those guys, but when you want to be the free spirit that you are and just disappear or go on a road trip for two days or to go on tour or whatever that is, then you run into problems because you've chosen that man." - Bang