The Pakistani army has announced that 14 of its soldiers were killed in an armed attack in the Balochistan region, southwest of the country.The army said in a statement that fourteen Pakistani regular forces soldiers and their collaborators were killed Monday while carrying out security operations against an armed group that opened fire on a bus in the Musakhel region, south of the country, yesterday (Sunday) evening.It added that security forces killed 21 militants in Balochistan after the attack on the bus.Earlier Monday, Radio Pakistan reported that 23 passengers were killed when gunmen opened fire on a bus in the Musakhel region.Source: Qatar News Agency