At least 20 people have been injured following an accident that occurred on the Nairobi Expressway at the Mlolongo toll station on Monday evening.

The accident happened after a 32-seater matatu belonging to the Embasava Sacco that was travelling at a high speed ploughed into stationary vehicles which were waiting to be cleared at the toll station.

The Kenya National Highways Authority (KeNHA) has confirmed the incident.

"Motorists are notified of an accident that has occurred along the Nairobi Expressway at the Mlolongo Toll Station, involving a PSV mini-bus. Multiple injuries have been reported, and traffic police are attending to the scene," KeNHA said.

The authority has also confirmed that police are already at the scene and are controlling the situation.

KeNHA has also advised motorists to enter or exit the Expressway at the Syokimau Toll Station to allow for rescue operations.

“Motorists are advised to exit/enter the Expressway at the Syokimau Toll Station, even as rescue efforts are underway at the scene of the accident,” the authority said.

Passengers who sustained injuries were rushed to various city hospitals and neighbouring ones such as the Kenyatta National Hospital, Shalom Community hospital and the Machakos Level 5 Hospital for emergency treatment.

This is the second serious accident to occur on the Nairobi Expressway and at the Mlolongo Toll Station within a fortnight's time.

In the last incident, one person lost his life during the accident when another vehicle rammed into stationary vehicles at the same toll station.