Damascus, Nov 12, SPA -- Syria has proposed Cairo, Vienna and Geneva as venues for U.N. investigators to question six Syrian officials in a probe into the killing of a former Lebanese prime minister, a Syrian official said on Saturday. The U.N. investigating team led by German prosecutor Detlev Mehlis had requested to interview the Syrian officials in the Lebanese capital, Beirut, where former Lebanese Prime Minister Rafik al-Hariri was killed in a bomb blast in February. The U.N. investigation has implicated senior Syrian and Lebanese officials in Hariri's killing. The six that Mehlis's team want to interview include Syrian President Bashar al-Assad's powerful brother-in-law and military security chief, Major General Assef Shawkat. "Syria has proposed several venues for the meetings ... Cairo, Vienna and Geneva. President Bashar al-Assad has said Syria will cooperate with the international investigation," the official told Reuters, without giving further details. In a speech last Thursday, Assad reiterated his country had no role in the killing and said it would cooperate with the probe but not at the expense of its national interests. U.S. President George W. Bush called on Syria on Friday to cooperate fully with the U.N. inquiry. --SPA 1354 Local Time 1054 GMT www.spa.gov.sa/302050