ISTANBUL (AFP) - Turkish Prime Minister Recep Tayyip Erdogan has undergone "successful" surgery for an intestinal malady, his office said Monday. The laparoscopic gastrointestinal surgery took place Saturday, his office said in a statement posted on its website, adding: "He is in good condition and will start working after he rests." The statement did not elaborate on the minimally invasive surgery or say how long the 57-year-old prime minister would stay away from work. Journalists covering the prime minister had had no information on his whereabouts since Friday. Erdogan has been in office since 2003.