Four men accused of attempting to murder a Rwandan general living in exile in South Africa made brief court appearances on Tuesday.
Prosecutors say none of the suspects are South African, but refuse to say where they are from or how long they have been in the country. At Tuesday's hearing, a new court date of July 14 was set to give investigators time to determine the suspects' immigration status.
Dissident Lt Gen Faustin Kayumba Nyamwasa's wife has accused the Rwandan president of being behind a June 19 shooting in South Africa in which the general was wounded. The Rwandan government has denied involvement.
Human rights groups and opposition politicians in Rwanda have accused Rwandan President Paul Kagame of using violence to suppress opposition.