Other Rwandan opposition politicians have been killed or attacked in South Africa, leading to strained diplomatic relations between the two countries.
In 2010, former Rwanda army chief Faustin Kayumba Nyamwasa survived an assassination attempt when shots were fired at his car in the driveway of his Johannesburg home. In 2014 his house was broken into, leading South Africa to expel Rwandan diplomats from the country after linking its intelligence agents to the raid.
In retaliation, Rwanda expelled six South African diplomats and accused the country of harboring Rwandan dissidents whom it accused of terrorism.
In 2013, Rwandan opposition politician Patrick Karegeya was found dead at an upmarket Johannesburg hotel where he had gone for a meeting. He was one of the founders of the Rwanda National Congress and his killing was widely suspected to have been politically motivated.
Rwandan opposition activists exiled in South Africa have long accused President Paul Kagame's government of ordering the attacks on its leaders in South Africa, accusations that have been denied by the government.