Pakistan’s prime minister traveled to restive southwestern Balochistan province Thursday to meet survivors of a train attack and the commandos who rescued over 300 passengers from the insurgents who killed 21 civilians and four troops.

ISLAMABAD — Pakistan’s neglected southwestern province of Balochistan has been the scene of a yearslong insurgency, with a dramatic uptick in attacks in recent years underscoring the struggles the government in Islamabad faces in dealing with myriad security threats.

Terrorists in explosive vests have reportedly threatened Pakistan train passengers' lives if officials refuse to release imprisoned militants.