A little more than a year ago, Grace Mugabe was a powerful first lady who was preparing to succeed her husband as president of Zimbabwe.

Her political ambitions were thwarted by her rival Emmerson Mnangagwa.

Now, she is a wanted person - over an alleged assault of a model in Johannesburg in 2017.

South Africa's decision to issue an arrest warrant for her is not surprising.

Law enforcement agencies in South Africa have regained their confidence to investigate high-profile figures since scandal-hit President Jacob Zuma was forced to resign in February.

But do not expect Mrs Mugabe to be in the dock anytime soon.

She is bound to be careful about her travel plans, and any attempt to extradite her will be a long and complicated process.