"Somali forces are already on the ground conducting investigations", a police officer named Ahmed Farah told Xinhua.
Militants targeted a central Afisiyone marketplace in southern Mogadishu on Saturday, causing carnage and killing at least 10 people and wounding twice as many in the densely populated area, police said.
Witnesses saw several bodies at the scene of the blast near the vegetable market in Mogadishu's Waberi district on Saturday, where shops and stalls were wrecked and ambulances raced away with casualties.
He further said the death toll could increase since the auto went off at a time when the market was densely populated.
Officials said the number of deaths could still rise as more people are accounted for.
The auto bomb targeted a police station in the area and is believed to be connected to President Hassan Sheikh Mohamud's visit to a local university.
Somali men retrieve the dead body of a person who was killed when a vehicle bomb targeted a police station in the Waberi neighborhood, where President Hassan Sheikh Mohamud was visiting a university, in the capital Mogadishu, Saturday, Nov. 26, 2016. No group has claimed responsibility for the attack.
On August 26, over a dozen people were killed in a vehicle bombing outside a popular hotel close to the presidential palace in the capital.
More than 22,000 peacekeepers are now deployed in Somalia in the multi-national African Union force.
Somalia is still battling an Islamist insurgency while it seeks to rebuild after more than two decades of conflict and chaos that have left the nation in tatters.
The explosion ripped through the market causing mayhem as people ran for safety, an eyewitness said.
Around 13,000 people are now voting for a total of 275 MP positions who will ultimately vote for a new president.
The parliamentary vote was due to end on 30 November, after several delays, but an official said it was now likely to last until mid-December.