Three Turkish engineers were killed Monday after a suicide bomber targeted their vehicle in eastern Afghanistan, dpa cited an official as saying. "The Turkish engineers were traveling to their work site today at 7:30 am (0300 GMT) in Behsud district when a suicide bomber on a motorbike blew himself up close to their vehicle," said Ahmad Zia Abdulzai, governor spokesman for Nangarhar province. A fourth engineer in the vehicle as well as a nearby child were also injured, Abdulzai told dpa. The engineers were working for a private company building logistic facilities for the Afghan police in Behsud district, he said Nobody has claimed responsibility for the attack.