FWIW, Muslim leaders have spoken out quite publically just yesterday. Perhaps (unfortunately) not directly about this horrific incident in Somalia, but certainly about human rights and dignity, protection of minorities, and a host of other issues. The joint Catholic-Muslim Declaration that follows a three day meeting between Catholic and Muslim leaders at the Vatican, can be read here:

http://www.asianews.it/index.php?l=en&art=13687&theme=2&size=A

This historic meeting has gotten just about zero mention in the USA press that I typically read. Note where you must go to read anything about it.

I did hear a snippet (on NPR) of a statment by one of the Imams who attended, which specifically denounced "terrorism" and "oppression of women". I would love to find a transcript or audio of the whole bit.