South Korea has confirmed that a second hostage has been killed by the Taleban in central Afghanistan, BBC reported.
The foreign ministry identified the latest victim as 29-year-old Shim Sung-min, a former IT worker.
His body was found at the side of the road in the village of Arizo Valley in Ghazni province. He had been shot.
Shim Sung-min was one of 23 Korean Christian aid workers - 18 of them women - seized on 19 July. The body of their leader was found last Wednesday.
A man claiming to speak on behalf of the Taleban said the militants had killed the Korean hostage on Monday evening because the Afghan government had refused its demands to release eight jailed militants.
Earlier, a video of the hostages was aired on Arabic TV station al-Jazeera.