KABUL — An Afghan security guard opened fire on a group of doctors at a Kabul hospital on Thursday morning, killing three foreign physicians and wounding two other people, officials said. The shooting at Cure International Hospital in western Kabul was the latest attack on foreign civilians in the Afghan capital this year. The nationalities of the three killed doctors were not immediately known. The attacker was a member of the Afghan Police Protection Force assigned to guard the hospital, according to District Police Chief Hafiz Khan. He said the man's motive was not yet clear. The attacker was wounded and in custody. – AP