Over the past week, unidentified drones have been seen flying over joint U.S.-U.K. military bases in the United Kingdom.

Small, unmanned craft were seen flying over four bases in England, the U.S. Air Force in Europe said. The Pentagon said that there had not been “any significant mission impact.”

It is not ruled out that Russia may be behind it. The sightings began when London authorized Ukraine to use ballistic missiles on Russian soil. Sixty electronic warfare specialists from the Royal Air Force (RAF) have been sent to the American bases on British soil due to the suspicious presence of drones near the military facilities since last week.

These latest drone sightings come after it was reported in The Wall Street Journal that mysterious drones swarmed the area around Langley Air Force Base, Virginia, in December 2023 for 17 days.

LONDON (Reuters) - Unidentified drones are still being spotted over United States Air Force (USAF) bases in England on Wednesday, a USAF spokesperson said, confirming that a fourth base had also been targeted by the week-long airspace incursions.

The U.S. Air Force announced several unmanned aerial systems were detected over three bases it has used in the United Kingdom last week. The drones, which ranged in sizes and configurations, were spotted last week between Wednesday and Friday “in the vicinity of and over” Royal Air Force Lakenheath,

On Friday, The War Zone broke the news about a multi-drone incursion of the U.S. Air Force’s master fighter base in the United Kingdon, RAF Lakenheath. Since then, we have received information that the incursions were more widespread,

The British military has increased security around four air bases in the country that are used by U.S. forces after "a number" of drones were spotted near them.