Suspected terrorists have staged an attack at Dusit D2 hotel, 14 Riverside Drive in Westlands.
At least six attackers arrived at the area at around 3.30pm launching an attack on the premises.
A loud bang resembling a grenade explosion followed by heavy gunfire filled the air as the gunmen advanced into the area.
Security officers drawn from various teams including the elite recce squad have since been deployed in the area to neutralize the attack.
Rescue operations are currently underway and the injured have been rushed to Kenyatta National hospital, Aga Khan and M-P shah.
The number of casualties is still unknown but speculation report that the number may be above five.
Meanwhile, the National Police Service (NPS) has cordoned off 14 Riverside Drive following the attack.
“Police wishes to confirm that there has been an attack incident along 14 Riverside Drive. The area has since been cordoned off and motorists are advised to use alternative routes to facilitate smooth operations of the Police,” tweeted the National Police Service.
Inspector general of police Joseph Boinet has urged the public to remain calm.
Speaking at Jogoo House, Boinet confirmed that the perpetrators are still holed up in the building.
“The police are currently at the premises trying to contain the situation and flash out the criminals.We are trying to contain the situation in the shortest time possible.” He said
The vehicle used by the attackers has been cordoned and the Bomb and Hazardous Disposal Unit is preparing to scrutinize it to establish whether it has explosives.