Gen Abdi Adan was among the dead, Xinhua news agency reported.
Ten others were injured at Coffee Italian restaurant, near the country's immigration headquarters in the Somali capital.
"We have confirmed the death of five people in the explosion. Ten other people were injured," a police officer was quoted as saying.
Witnesses said the explosion shook buildings around the location.
"We heard a huge explosion coming from a restaurant near the immigration offices. The whole place was shaking," the officer said.
The busy restaurant is frequented by local business people, lawmakers and government officials.
Sources said the death toll is likely to rise because some casualties sustained serious injuries.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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.
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