(FILES) This file photo taken on April 18, 2017 shows President Robert Mugabe kissing his wife and first lady Grace Mugabe during the country's 37th Independence Day celebrations at the National Sports Stadium in Harare. South African police on August 15, investigated an alleged assault by the Zimbabwean first lady Grace Mugabe on a model who was in a hotel in Johannesburg with her two sons. Grace Mugabe is alleged to have attacked Gabriella Engels, 20, with an extension cord on August 13, leaving her with wounds on her forehead and on the back of her head. / AFP PHOTO / Jekesai NJIKIZANA