Pakistani and Afghan forces exchanged fire late last night along their tense border, though no casualties were reported. Each side blamed the other for violating a Qatar-brokered ceasefire that has largely held for the past two months. The clash came a day after Pakistan agreed to allow UN relief supplies into Afghanistan through the Chaman and Torkham crossings, which have been mostly closed amid rising tensions.

Pakistani police official Mohammad Sadiq said the firing began from the Afghan side near Chaman. In Kabul, Taliban spokesman Zabihullah Mujahid accused Pakistan of launching the first attack in Spin Boldak, while Afghan border police said a Pakistani grenade landed on their side before they responded.

Border tensions have escalated since deadly clashes in October killed dozens and injured hundreds after explosions in Kabul that the Taliban blamed on Pakistan. Although the Qatar-mediated ceasefire reduced violence, follow-up talks in Istanbul collapsed.