Three Afghan election workers, who were kidnapped by suspected Taliban or al-Qaida members, have been found unharmed in the northeastern province of Nooristan, an official said.

Mohammad Yusouf, secretary for the governor of Nooristan, said the men were found in a house on Saturday after a search by security officials in the Kamdesh district where they were abducted three nights ago.

"We have received reports from the police chief that the three men have been found, but none of the kidnappers has been arrested," he told Reuters.

The abduction was the latest in a series of violent incidents in the approach to 18 September parliamentary polls, the next big stage on Afghanistan's difficult path to stability.

The three men were seized from a villager's house after the end of a voter registration programme in the rugged region.

Yusouf said the victims could not recognise the kidnappers, because they had covered their faces; but said they spoke in a local language.

"We suspect al-Qaida or Taliban were behind the kidnappings," Yusouf had said earlier.

Earlier attack

A female Afghan election worker was wounded last week in an attack on a voter registration centre in the same district. No group has claimed responsibility for the attack or the abductions.

Separately, a district judge and a senior district official were killed by suspected Taliban guerilla in two attacks in the southern province of Kandahar, one late on Friday and the other early on Saturday, officials said.

Taliban officials could not be reached for comment about the incidents.

PHOTO CAPTION

An Afghan refugee coming from Pakistan, waits for his father to climb the truck at a U.N. facility in Kabul, Afghanistan, before returning to their home provinces Friday, July 22, 2005. (AP)