JOHANNESBURG (AP) — A South African group representing a model who was allegedly assaulted by Grace Mugabe says authorities have issued an arrest warrant for the wife of Zimbabwe's former leader.

The AfriForum group said Wednesday that it was informed by South African police about the warrant for Mugabe, who was accused of assaulting Gabriella Engels in a Johannesburg hotel last year.

The South African government had granted diplomatic immunity to Mugabe, who returned to Zimbabwe despite calls for her prosecution. She returned with husband Robert Mugabe, who was then president of Zimbabwe and attending a regional summit in Pretoria. He was forced to resign in November 2017.

This year, a South African court ruled that the decision to grant diplomatic immunity to Grace Mugabe was illegal.