"Their organization campaigns for women's rights and against female genital mutilation but it was unclear who was behind the attack." My guess would be that it was militant Christian Fundamentalists.

"Aid worker killed in Somalia," from [1] AP, October 26 (thanks to Eleutheria ´H Thanatos):

The head of a Somali aid agency says a gunman shot dead a Somali woman employee in the latest of a string of attacks on the humanitarian community.

Ali Sheik says Duniya Sheik Daud was killed Saturday evening as she returned from work at the Iida organization in the central Somali town of Gurilel. Their organization campaigns for women's rights and against female genital mutilation but it was unclear who was behind the attack....