Kenyan special forces take position at the scene following several explosions and heavy gunfire.
The four attackers, one wearing a green belt laden with grenades, were seen on CCTV blasting their way into the hotel and office complex in Nairobi after detonating car bombs outside a nearby bank .
The suicide bomber then blew himself up in the lobby before the other three began hurling grenades and shooting people as they fled or hid under tables.
Kenyatta said that 14 civilians have been confirmed dead and that more than 700 people had been evacuated to safety from the the 14 Riverside Drive complex which includes a large hotel known as DusitD2, banks and offices.
Somali Islamist militant group al-Shabaab, which has links to al-Qaeda claimed that it was behind the terror attack.
Motionless bodies of victims around a table at a hotel and office complex in Nairobi yesterday after a terror attack in which at least 15 people were killed.
Bullet holes in the windows of a restaurant inside the venue.
CCTV showing two of the alleged attackers walking past a barrier towards the hotel wearing dark paramilitary-style gear. Al Shabaab has already claimed responsibility for the carnage.
Rescuers and journalists evacuate an injured man from the scene where explosions and gunshots were heard at the Dusit hotel compound, in Nairobi.
People run as they are evacuated at the scene where explosions and gunshots were heard at the Dusit hotel compound, in Nairobi.