Wikipedia describes a man who is an ICU remnant, rather than a break-away (not saying you're wrong):

Sheik Hassan Abdullah Hersi al-Turki (also known as Hassan Al-Turki, or "Al-Turki"–"The Turk"), an Islamist leader in Somalia, is a military leader in the Islamic Courts Union and formerly a leader of Al-Itihaad al-Islamiya. He is from the Ogaden clan, Reer - Abdille subclan. On June 3, 2004, Hassan Al-Turki was designated, under US Presidential Executive Order 13224, for terrorist financing.[1] He was born in 1944 in the Ogaden region in Ethiopia.[2] It is believed that after the loss of the Ogaden War, he left Ethiopia to continue his revolutionary efforts in Somalia.[3]

Turki was targeted in a US fighter jet strike on March 2nd, 2008. US fighter jets struck the southern Somali town of Dobley. The bombings by the AC-130 gunships targeted two homes in the town that were allegedly visited by Turki, who is believed to have ties to al-Qaeda. [4]

Main articles: Rise of the Islamic Courts Union (2006) and War in Somalia (2006–present)
Hassan Al-Turki became a military leader of the Islamic Courts Union (ICU), and has been in charge of Dhobley district near the Kenyan border.[5] He led the forces of the ICU in the taking of Jubaland.

On September 23 2006, his forces approached Jilib, en route to Kismayo. Juba Valley Alliance forces withdrew without a fight.[6] After the city fell, on September 24, he promised peace to the city after Islamic militiamen broke up an anti-Islamist demonstration with gunfire, killing three teenagers.[7] (Also see: Juba Valley Alliance: War In Somalia) Al-Turki addressed people in Kismayo telling them the region would be under the Islamic law. "This city is seized by Islamic forces including all tribes of Somali men, welcome to the new peace brought to this city and I promise you will live in security and prosperity," Sheikh Hassan Al-Turki said.[8]

Hassan Turki evaded capture by Somalia's transitional government since the Islamic Courts were forced from power by Somali and Ethiopian troops. In September 2007, he was running a military training camp on the Kenyan-Somali border. [9]