General Kayumba Nyamwasa (2001 file photo)
General Kayumba Nyamwasa (2001 file photo)

The former chief of staff of the Rwandan army and a leading critic of President Paul Kagame was shot Saturday in South Africa, where he lives in exile.

General Kayumba Nyamwasa was shot by an unknown assailant.  He was taken to a Johannesburg hospital where he is undergoing surgery. South African police are investigating the shooting.

Nyamwasa's wife told the BBC the couple had been returning from a shopping trip when a gunman opened fire on their car.  She said she was certain it was an assassination attempt, since there was no demand for money or goods.

Earlier this year, Rwandan officials accused Nyamwasa of conspiring with another former army officer against Mr. Kagame's government.

The country's chief prosecutor accused the two men of being involved in three grenade attacks in the capital, Kigali, in February. Two people were killed and 30 others were wounded.

Some information for this report was provided by AP, AFP and Reuters.