A serious crash has closed a section of the A142 near Chatteris.
Police have asked people to follow a local diversion after posting on social media that the road is closed at roughly 9pm.
Policing Fenland posted on Facebook: “A142 – ROAD CLOSED.
“The A142 Isle of Ely Way at Chatteris between New Road and A141 is closed.”
Traffic monitoring shows a diversion running through Chatteris and Cambridgeshire Constabulary have confirmed the road remains closed.
Residents have said they saw an air ambulance landing in the area however at this stage no information has been released regarding injuries of those involved.
Police have been contacted for comment on the incident but are unable to release further information at this time.