Fighting erupted again on September 9 between Taliban forces and Pakistani security forces in the Kurram-Khost border areas, with eyewitnesses saying the violence included heavy weaponry and one elder saying a Pakistani soldier had been killed, although that could not be confirmed.
The outbreak follows reports of intense clashes in the same border region between Afghanistan and Pakistan that caused multiple casualties over the weekend.
Locals on the Afghan side of the border told Radio Mashaal that the latest fighting started around 1 p.m. local time on September 9.
Residents were said to be fleeing the villages of Palotsa and Setwan in the Zazai Maidan district of Afghanistan's Khost Province.
A local elder told Radio Mashaal that a Pakistani soldier had been killed but Radio Mashaal could not independently confirm that report.
Intermittent outbreaks of violence have heightened concerns about security in the region, with recent fighting sparked by an attempt to erect a security outpost on the Afghan side that Pakistani troops tried to stop.
Islamabad insists mutual agreements preclude the construction of new security posts by either side.
The Taliban-led government in Afghanistan has disputed Pakistani accusations that it is allowing gunmen linked to the outlawed Tehrik-e Taliban to shelter in the area and launch cross-border attacks in Pakistan.
The Taliban has moved reinforcement troops, artillery, and tanks to the area.
Radio Mashaal's Khost correspondent said the Taliban was preventing locals and journalists from sharing information with media or outsiders.