A number of unidentified drones have been spotted over three airbases in Britain, the US air force has confirmed.
“Small unmanned aerial systems” were seen between 20 and 22 November over RAF Lakenheath and RAF Mildenhall in Suffolk, and RAF Feltwell in Norfolk.
The USAF, which uses the bases, said it was unclear at this stage whether the drones should be considered hostile.
It also declined to comment on whether any defence mechanisms were used, but said it retains “the right to protect” installations.
A spokesperson for US air forces in Europe said: “We can confirm that small unmanned aerial systems [UASs] were spotted in the vicinity of and over RAF Lakenheath, RAF Mildenhall and RAF Feltwell between 20 and 22 November. The number of UASs fluctuated and they ranged in size [and] configuration.