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

Baloch separatists have repeatedly attacked the Jaffar Express in the last few years. It is commonly used by security personnel, mostly from Punjab and Khyber Pakhtunkhwa provinces. The last major attack on the train took place in November when a suicide bomber detonated himself at the Quetta railway station as it prepared to depart.