It sounds like a scene straight out of a horror movie.

But the nightmare scenario of being pulled over by a fake police officer became reality for one motorist in Norfolk at the weekend.

A woman was approached by a man driving a car with blue flashing lights on a quiet country lane.

The male driver of the car then approached her passenger door and gestured to her to put her window down. He then asked her to get out of the car but the woman refused as she did not feel comfortable and agreed to get out of the car in a well-lit are of East Harling.

But the man never met her and officers later told the woman the driver was not a policeman.

Norfolk Constabulary has now issued advice to motorists on what to do if they are in a similar situation and have clarified what their rights are.

Does an unmarked police car have the power to stop vehicles?

The answer is yes. But the officer must be wearing uniform in order to carry out the stop. The law states motorists have to stop for a police vehicle displaying blue lights; however, the officer must be readily identifiable as a police officer in uniform.

Do the police need a reason to stop me?

No, they don't need a reason. The police have the power to stop any vehicle and ask for your name and date of birth and to see your driving licence, insurance and MoT documents. These can usually be shown later at a police station.

What if you are not sure if it is a real police officer?

If you do get pulled over but you are suspicious, lock your doors, close your windows and ask for the officer to show their identity. You can then call the police on 101 to confirm that identity; however, always dial 999 in an emergency. Do not drive off at great speed making the police think you are trying to get away.