Man held in Italy jail for 18 years killed in Somalia blast
Omar Hammami, known as al-Amriki, and Osama al-Britani, a British citizen of Pakistani origin, are said to have died in an early-morning attack in a village south-west of the capital, Mogadishu.
They have been hiding from al-Shabab since leaving the group this year.
There have been several previous reports of al-Amriki
No group has claimed responsibility for his murder, but such incidents bear all the hallmarks of past attacks in Somalia by Al-Shabaab militants.