An explosion followed by heavy gunfire has been reported at 14 Riverside in Westlands, Nairobi.
Unconfirmed reports indicate there was an explosion outside one of the buildings before gunshots filled the air at around 3PM, East Africa time.
A picture of a car on fire is circulating online and heavy smoke can be seen billowing from the area.
People trapped inside the buildings report of incessant shootings with many taking to social media to say they are holed up in several of the adjacent buildings. Many others reported of an active shooter in one of the buildings.
Police have since arrived at the scene.