TEHRAN (Defapress) - The sources also said that the attack in the Kurram region came as Pakistan and Afghanistan struggle to maintain a fragile ceasefire since a border skirmish in October.

Al Arabiya reported that Islamabad has linked the increase in violence on the border to militants using Afghan soil to attack security forces along the two countries' border, but Kabul has rejected the accusations, saying that Pakistan's security is an internal matter.
No group has yet claimed responsibility for the attack on the border between the two countries, which, according to informed sources, took place on Monday night and Tuesday morning.
Kabul and Islamabad have also been engaged in intermittent border clashes since October, including a heavy exchange of fire on Friday that killed at least five people.
Three rounds of talks hosted by Qatar, Turkey, and Saudi Arabia have failed to reach an agreement.
The mountainous border areas of the two countries are home to extremist militants from the Tehreek-e-Taliban Pakistan (TTP), also known as the Pakistani Taliban, who have been fighting the government for nearly 20 years.