An Afghan television station has aired video of a German aid worker who was kidnapped Saturday by militants in Kabul.
The woman, speaking in Dari and English, said she was "okay" and called on her government to help secure her release. She identified herself as Christina Meier.
A man in the video wearing sunglasses and a headscarf demanded that the Afghan government release a number of unidentified prisoners. He said the kidnappers are "not bad people," describing them as a "special group".
Afghan authorities say they believe the Taleban is not involved in the abduction.
Gunmen acosted the aid worker Saturday inside a Kabul restaurant. The German woman is a member of the group Ora International, a Christian relief organization.
On Friday, militants abducted four engineers from a bridge construction site in Kandahar province.
Afghan authorities are also trying to negotiate the release of 19 South Koreans and a German engineer who were taken hostage last month.
In other developments, a NATO soldier was killed on Sunday while escorting a convoy in southern Afghanistan.
NATO did not disclose the soldier's nationality or the exact location of the incident.