KABUL/ KARACHI: ‌Pakistani and Afghan forces exchanged fire along their border on Tuesday, with each side accusing the other of initiating the ​clash, days after Pakistani airstrikes in Afghanistan strained already tenuous ties.

The incident marks the latest flare-up along the 2,600-km (1,615-mile) border, where tensions have risen since Pakistan’s strikes on Saturday and Sunday and threaten a fragile ceasefire following deadly clashes in October.

Mosharraf Zaidi, spokesperson for Pakistan’s prime minister, told Reuters the Afghan ‌Taliban authorities ‌had initiated “unprovoked firing” in ​the ‌Torkham ⁠and Tirah ​sub-sectors along the ⁠Pakistan-Afghanistan border.

“Pakistan’s security forces responded immediately and effectively, silencing the Taliban aggression,” Zaidi said, warning that any further provocation would be met “immediately and severely.”

Afghan officials gave a different account, saying Pakistani forces opened fire and that Afghan troops responded.