The incident took place at RAF Lakenheath, used by the US Air Force, at around 5.30pm.

Personnel were told to take shelter during this incident as an air raid siren rang out across the base.

RAF Lakenheath was put into lockdown (Image: Sonya Duncan)

Sirens were also heard at RAF Feltwell in Norfolk.

 Nicole Barraclough, who lives near the Norfolk base, told the Daily Mail: "At around 5.30pm I was in my living room with my toddler and I heard what sounded like war........

© Norwich Evening News