Al-Shabab's spokesman Sheikh Ali Mohamud Raghe, widely known as Ali Dheere, said the bomb attacks, that killed dozens of civilians who were watching world cup final matches, were carried out by his group.
Speaking at a press conference held over the phone on Monday afternoon, he added that the attacks, which left 70 people dead and scores wounded, "was months in the making." Touting the fighters who carried out, he said they "meticulously planned and executed a response to the enemy."
It's the first time that al-Shabaab, designated by the US and many Western countries as a terrorist entity, has carried out an attack of this magnitude outside of Somalia. Some experts have long believed that al-Shabaab's global jihadist wing is winning over the domestic movement.