23 July 2012 :

Somalia's most powerful militant group publicly executed three of its members -Ishaq Omar Hassan, 22, Yasin Osman Ahmed, 23, and Mukhtar Ibrahim Sheikh Ahmed, 33 - saying the trio had spied on the militants for the U.S. and British intelligence agencies.
Al-Shabab said the three men were CIA and MI6 informants, and were the reason several drone attacks killed leaders from the group.
Mohamed Jama, a resident in the coastal town of Merca, told The Associated Press that dozens of masked fighters tied up the three men and killed them by firing squad.
A self-proclaimed militant judge gave the death penalty order. Hundreds of residents were forced to watch and many of them vomited after the killings, Jama said.