KABUL, Afghanistan (AP) _ The Taliban say they killed a Christian aid worker in Afghanistan because she was trying to spread her religion.

But the aid group that she worked for denies that its workers were proselytizing, which is against the law in Afghanistan.

The group, called Serving Emergency Relief and Vocational Enterprises, or SERVE, identifies the woman as 34-year-old Gayle Williams. It says she had dual British and South African citizenship.

In a statement on its Web site, the group describes Williams as “a person who always loved the Afghans and was dedicated to serving those who are disabled.”

Taliban assailants on a motorbike gunned her down as she walked to work Monday in Kabul.