Pakistan’s traders and Afghan nationals gather at the Pakistan-Afghan border in Chaman on Saturday. AFP

Border tensions have risen since the Taliban's return to power last year, with Pakistan alleging militant groups are planning attacks from Afghan soil.

The Taliban deny harbouring Pakistani militants, but are also infuriated by a fence Islamabad is erecting along their 2,700-kilometre (1,600-mile) border, drawn up in colonial times and known as the Durand Line.

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Each side blamed the other for Thursday's fighting at the Chaman-Spin Boldak crossing.

"The border remains closed for passengers as well as trade," a Pakistani security official told AFP.

Hundreds of people were stranded at a key border crossing between Pakistan and Afghanistan. AFP

"A delegation of tribal notables and religious leaders has been formed to hold talks with the Taliban," he added.

An Afghan official said talks so far had been fruitless.

"They are trying to speak again... but if nothing happens then the issue will be discussed on a higher level," the Kandahar governor's spokesman, Mahmoud Azaam, told AFP.

An AFP reporter saw hundreds of people waiting at Chaman on the Pakistan side for the border to reopen.

Thousands usually cross every day, including traders, Afghans seeking medical treatment in Pakistan, and people visiting relatives.

Agence France-Presse