The Taliban has killed one more South Korean hostage held in Afghanistan on Monday night, a purported Taliban spokesman Yousuf Ahmadi told Xinhua from an undisclosed place.

Ahmadi said the male hostage named Song Kin-Shi was shot dead at around 8:30 p.m. (1600 GMT) as the Afghan government was not serious in the talks.

He said the dead body was dumped near Ghazni-Kandahar highway.

Taliban has insisted on the exchange of Taliban prisoners for the hostages.

A total of 23 South Koreans were kidnapped by Taliban militants on a road in the central Ghazni province on July 19. One male hostage was executed by Taliban on July 25.