A small number of drones have again been spotted flying near US Air Force bases in the UK.
The US Air Force (USAF) said it was monitoring the airspace over East Anglia bases RAF Lakenheath, RAF Mildenhall and RAF Feltwell after the drones were seen overnight.
USAF said the number of sightings “fluctuated and varied between the bases” but they have not been identified as hostile.
It comes days after USAF confirmed that a small number of “unmanned aerial systems” were spotted in the vicinity of and over the three bases between Wednesday and Sunday.
UK authorities are working to ensure the safety of the sites.
USAF has not identified who is believed to be behind the incidents.
In a statement, a spokesperson for USAF in Europe said: “We can confirm there were sightings yesterday (Monday) during night-time hours and can only confirm that the number fluctuated and varied between the bases over the night.
“Since November 20, there has been no impact to residents or infrastructure and they have not been identified as hostile.
“However, they are still continuously being monitored to ensure the safety and security of the installations.”
A spokesman for the Ministry of Defence said: “We take threats seriously and maintain robust measures at defence sites.
“We are supporting the US Air Force response.”
Why are you making commenting on The National only available to subscribers?
We know there are thousands of National readers who want to debate, argue and go back and forth in the comments section of our stories. We’ve got the most informed readers in Scotland, asking each other the big questions about the future of our country.
Unfortunately, though, these important debates are being spoiled by a vocal minority of trolls who aren’t really interested in the issues, try to derail the conversations, register under fake names, and post vile abuse.
So that’s why we’ve decided to make the ability to comment only available to our paying subscribers. That way, all the trolls who post abuse on our website will have to pay if they want to join the debate – and risk a permanent ban from the account that they subscribe with.
The conversation will go back to what it should be about – people who care passionately about the issues, but disagree constructively on what we should do about them. Let’s get that debate started!
Callum Baird, Editor of The National
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here