AN investigation has been launched after two women needed hospital treatment following a crash involving a police car.
A marked police Ford Focus and a blue Toyota Rav4 collided in Little Tey on Saturday at 5.30pm.
Police said their vehicle was responding to an incident and was using its blue lights and siren.
The cars collided on the A120 at the junction with Salmons Lane.
Two women, aged 45 and 18, from the Colchester area, were taken to Colchester General Hospital by ambulance and treated for severe bruising.
A woman PC, aged 32, also needed hospital treatment for minor injuries.
A male PC, 41, was also in the vehicle when the crash happened.
The road was closed for four and a half hours while an investigation was launched.
Police are appealing for witnesses to call Dunmow response and patrol on 101.