A commander of Islamist extremist militant group al-Shabaab was killed in a US drone attack in Somalia, dpa cited the East African nation's National Intelligence and Security Agency as saying Wednesday. "The killed al-Shabaab commander is called Abdinur Mahdi, also known as Yusuf Dheeg," NISA said in a statement. Dheeg, who was killed on Saturday, was in charge of coordinating attacks inside and outside of Somalia, as well as assassinations and suicide bombings, the statement added.