The event, which had been scheduled to start Saturday (August 5), was to include a medical conference and two soccer matches at Kabul's Olympic Stadium. It was being organized by the Institute of Asian Culture and Development, a Seoul-based Christian humanitarian aid group that has run medical clinics in Afghanistan since January 2002.

But Islamic clerics accuse group members of trying to convert Muslims to Christianity, a crime in the Islamic republic.

The group's Central Asia director, Kang Sung Han, tells RFE/RL that the allegations of evangelism are "wrong" and that group members are shocked by the negative reaction they have received in Afghanistan.