Kenyan officials say they have detained eight suspects and freed three others while investigating into a four-day siege at Nairobi mall which ended by the death of at least 67 people and the partial destruction of the complex.



The Minister also told reporters that there were no formal reports of people still missing since the assault. The Kenyan Red Cross, however, said earlier that dozens were still missing.

Investigators trying to determine the identity of the attackers were making "good progress" in their search through the rubble at the Westgate mall where three floors collapsed after a series of blasts and a huge blaze, Joseph Ole Lenku further noted.

In addition, officials previously said five assailants were among the deseased.

According to the senior security sources, the militants who led the attack may have hired a shop in the mall in the weeks prior to the siege.

Al-Shabab officials have claimed responsibility for the assault and warned the Kenyan government to withdraw its troops from their country.

Kenya has more than 4,000 army soldiers in southern Somalia, where they have been battling the al-Shabab fighters since 2011.