Gunmen raided a humanitarian agency's office in south Darfur and kidnapped two German aid workers, a spokesman for the international peacekeeping mission said today. The identity of the kidnappers is unknown and there has been no contact with the men who were abducted late Tuesday, AP quoted Chris Cycmanick, spokesman for the U.N.-African Union peacekeeping mission in Darfur, as saying. The German Foreign Ministry said two men working for the Technisches Hilfswerk, a state agency doing development work, have been missing in Darfur since Tuesday.