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 sirens.
"At first I thought it was a car playing weird music past my house.
"Unfortunately, the sound continued. It continued for five minutes.
"We thought maybe it was a drill. Then we heard an American male voice from the speakers telling people to remain indoors and shelter."
At around 10.30pm, a spokesman for the Ministry of Defence confirmed the incident had been dealt with.
He said: “We are co-ordinating with all relevant parties regarding reports of unauthorised drone activity at RAF Lakenheath this evening.
“USAF Security Forces personnel responded to the reports and the situation is now resolved.
Military personnel by one of the USAF Stratotanker planes on the tarmac at RAF Mildenhall in Suffolk (Image: Joe Giddens)
“We are working closely with them to establish the facts. We will provide updates in due course.”
The news followed that at least 12 US aircraft had departed from nearby RAF Mildenhall earlier this week.
The Wall Street Journal reported that the move came amid a threat from Iran.
There has been heightened security activity at the base following an incident at RAF Fairford in September.
Police said petrol but no explosives were found during searches of vans near the base.
Two men have been charged by the Crown Prosecution Service over their alleged involvement in the incident.
While Iran denied any responsibility, the US removed all of its bombers from the base in October.
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