Updated

Iranian media say a state prosecutor has been killed in the restive southeast region near the Pakistani border, where an attack by militants less than two weeks ago killed 14 border guards. Sixteen "rebel" prisoners were later hanged there in reprisal.

It was not immediately clear whether the latest killing was linked to the region's unrest, which includes clashes with drug smugglers and battles with an armed faction that claims to fight on behalf of Iran's Sunni minority.

The semi-official Fars news agency says unknown attackers on Wednesday killed Mousa Nouri, a prosecutor in the town of Zabol near the Pakistan border.

Another news agency, ISNA, quoted the region's judiciary chief, Ebrahim Hamidi, as claiming the slaying was not connected to the October hangings.