Three employees of the aid organization Medecins Sans Frontieres (MSF) have been killed in the Central African Republic, dpa cited an MSF spokeswoman as saying Monday in Johannesburg. She said more details would be available shortly. Radio France Internationale (RFI) said the three aid workers were killed alongside 19 other people in Nanga Boguila - 450 kilometres north of the capital Bangui - on Saturday.