Cameroon separatist fighters Wednesday claimed responsibility for the killing of four government workers, including a policeman abducted Tuesday in the country's restive English-speaking North-West region. Government officials say two of the hostages, including a government official the military freed, are responding to treatment in a hospital. Moki Edwin Kindzeka reports from Yaounde that the abduction and killing followed renewed separatist attacks that have claimed several dozen civilians within two weeks