Islamabad has issued a warning to Afghanistan's Taliban leadership, accusing it of giving shelter to militants. In turn, the Taliban claim Pakistani bombings recently killed dozens of civilians on Afghan soil.
Islamabad claims that regular attacks are being carried out by militant groups operating from across the border.
What did the Pakistani government say?
In its statement on Sunday, the Pakistani Foreign Ministry gave an unusually direct assessment of the situation.
"Pakistan, once again, strongly condemns terrorists operating with impunity from Afghan soil to carry out activities in Pakistan," it said in a statement on Sunday.
Islamabad urged Kabul "to secure Pak-Afghan Border region and take stern actions against the individuals involved in terrorist activities in Pakistan."
Pakistan was itself often accused of harboring the Afghan Taliban before the hardline movement returned to power last August. Islamabad has since been at the forefront of efforts to have the world engage with the new Afghan government.