ISLAMABAD: A PAF fighter jet crashed during a training mission in the country’s northwest on Wednesday, killing two pilots, officials said.“Pakistan Air Force reports with regret that a PAF Mirage aircraft, while on a routine operational training mission, crashed south of Dera Ismail Khan,” an air force spokesman said in a statement. “A board of inquiry has been ordered by Air Headquarters to determine the cause of accident,” the spokesman said.Police officials in Dera Ismail Khan also confirmed the crash and casualties.