A Pakistani official says residents have fled a border area with Afghanistan after forces from both sides clashed into the early hours of the morning.

Pakistani and Afghan security forces clashed on Monday at the recently shuttered main border crossing between the two countries, killing at least one combatant and injuring several, officials said.

PESHAWAR, Pakistan — Pakistani and Afghan forces traded fire overnight at a key northwestern border crossing that has been closed for more than a week over a dispute between the two neighbors, officials said Monday.

The closure has stranded 5,000 trucks filled with essential goods and caused at least $15 million in losses, said Yousaf Afridi, president of the Chamber of Commerce and Industries for Pakistan's Khyber district where the Torkham crossing is located.

A nearly weeklong closure of a key crossing on the Afghanistan-Pakistan border has disrupted bilateral trade and the movement of people, causing financial losses to traders and leaving people stranded in harsh winter conditions,