By Farai D Hove| Former Grace Mugabe "son," Jonathan Moyo has denied responsibility over her.

Jonso, as he is popularly called, disowned her doctorate.

Previously, it was thought Jonso was the Minister in charge of Higher Education at the time she was handed the controversial degree.

It was further thought Jonso was the brains behind the conferment.

But responding on Twitter on Wednesday, Prof Moyo threw the blame on his then cabinet colleague, Olivia Muchena.

Jonso said, “They know better, that Grace Mugabe graduated with her PhD from UZ with a PhD along with Joice Mujuru in 2014, when the Minister of Higher Education was Dr Olivia Muchena & when I was Minister of Information, overseeing the Herald, among other information ministry assignments!”