Tributes continue to pour in following the attack at 14 Riverside Drive where 21 people lost their lives.
IG Boinnet Wednesday confirmed the death toll has climbed to 21, after six more bodies were retrieved from the scene.
"It is unfortunate that we have picked six other bodies at the scene while one officer succumbed to the injuries," he said.
The IG said among the dead are 16 Kenyans, one Briton, one American and three others of African descent that are yet to be identified.
Opposition leader Raila Odinga also condemned the terror attack act.
"we condemn in the strongest term possible this act of cowardice by the attackers"
