More than 90 people were killed and 120 injured when a suicide bomber exploded a vehicle at a busy intersection in the Somali capital of Mogadishu on Saturday.
Police officer Mohamed Dahir told DPA on Sunday that many of the dead were pulled out of rubble of buildings damaged by the blast.
Speaking on state-run radio, Somali President Mohamed Abdullahi Mohamed described the attack as a national tragedy and called on the public to help the victims by giving blood. 
Mohamed announced three days of mourning as thousands of people took the city's streets to visit local hospitals and look for their loved ones who were still missing.
No group has claimed responsibility for the attack, but Somali Information Minister Abdirahman Yarisow said the militant group Al-Shabaab was likely behind it.
Al-Shabaab, affiliated with the al-Qaeda network which is seeking an Islamist state in Somalia, launches regular attacks in the volatile East African nation.
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