Relatives of the hostages have been waiting anxiously for news

A South Korean woman held hostage with 21 others in Afghanistan has pleaded for help to secure their release.

The woman, who identified herself as Yo Syun Ju, told an Afghan reporter by telephone all the hostages were sick.

"Tell them to do something to get us released," she said in an interview carried out in the presence of the Taleban militants holding her captive.

A group of 23 Koreans was abducted a week ago. The kidnappers have since killed one of the hostages.

In an interview obtained by the BBC from an Afghan journalist, Ms Yo, who said she was from Seoul, described her situation as "dangerous", adding: "Day by day it is getting very difficult...