Pakistan's military spokesman said on Friday the death toll in a train hijacking in the country's southwestern mountains had risen to 31 and he repeated accusations that neighbouring India and Afghanistan backed the militants who carried it out.

India on Friday dismissed Pakistan's terrorism allegations, stating the world knows the true "epicentre of global terrorism". This came after Islamabad accused India of backing terror but did not directly link it to the Balochistan train attack that killed 21.

The scope of the attack underscored the struggles Pakistan faces in efforts to reign in militant groups as attacks across the country surged in recent years. Accusing India and neighboring Afghanistan has been Pakistan's go-to strategy in the past.

Pak foreign office had claimed that BLA rebels involved in attack on Jaffar Express were in contact with ring leaders in Afghanistan.