A series of small drones have been observed close to three military installations in eastern England that are utilized by American forces, according to information released by the U.S. Air Force.

On Tuesday, this ongoing situation follows reports of drone sightings near RAF Lakenheath, RAF Mildenhall, and RAF Feltwell just days prior. The U.S. Air Forces Europe confirmed that these drones were under continuous observation as they appeared in the areas surrounding and above the three bases.

At this point, the Air Force has not disclosed any details regarding the identity of those believed to be responsible for these drone activities.