Adan Mohamed, a witness, told Xinhua that a vehicle loaded with explosives exploded at the junction of KM5 just opposite Safari hotel.
Most of the dead were civilians. Security forces have sealed off the blast site for investigation, Mohamed said.
Another witness Hamdi Elmi, who was near the scene, said the explosion was deafening and shook the entire surrounding area.
"I was in a public service vehicle when the explosion went off. I could see smoke from my back and the whole place was shaking," said Hamdi, adding that "We learn the police had been trailing the vehicle with explosives".
Windowpanes and doors in buildings far from the scene were destroyed.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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Doraiah Chowdary Vundavally is a Software engineer at VTech . He is the news editor of SocialNews.XYZ and Freelance writer-contributes Telugu and English Columns on Films, Politics, and Gossips. He is the primary contributor for South Cinema Section of SocialNews.XYZ. His mission is to help to develop SocialNews.XYZ into a News website that has no bias or judgement towards any.