Panic ensured following the incident after three people were killed and more than 50 injured after terrorist Adrian Ajao hit them with a car on Wednesday outside Parliament.
A spokesman for the Met said: "Police were called at approximately 22:55hrs on Saturday, 25 March to reports of a car in collision with a number of people in Essex Road, N1.
Officers are not treating the incident in Islington as terror related. Photo / Twitter
"Officers and London Ambulance Service attended the scene; initial reports state four people are suffering injuries - their condition awaits.
"The occupants decamped from the car and fled the scene on foot. One male has been arrested; enquiries continue. While enquiries into the circumstances continue, this is not being treated as terrorist related. Officers from Islington investigate."