Rapper Costa Titch dies after collapsing on stage in South Africa

The South African rapper Costa Titch died on stage while performing, police said Sunday, as they opened an investigation into the circumstances of the 28-year-old's sudden death.

The artist "collapsed while he was performing" on Saturday evening at the Ultra South Africa concert in the Johannesburg suburb of Nasrec, police told AFP.

They said a post-mortem would establish the cause of death.