At least five people, including three security personnel were killed in an attack apparently targeting Chinese engineers in Dera Bugti area of Balochistan, sources said on Tuesday. The sources said that the Chinese engineers remained safe in the attack. The dead and injured were being shifted to nearby hospitals. The sources said that the engineers were heading towards Dera Ghazi Khan to examine Kachi Canal. On Monday, at least 15 security personnel, including a major were killed in a clash with terrorists in Chamlang area of the province.