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,

Drones have been spotted flying near US airbases in the UK. The small fleet of unidentified drones were located over three US Air Force in Suffolk and Norfolk, which were the scene of similar incidents last week. Unmanned vehicles flew near RAF Lakenheath and RAF Mildenhall, in Suffolk, and RAF Feltwell.

Since the first small unmanned aerial system was first spotted on Nov. 20, the number of drones has fluctuated and there have been a range of different sizes and configurations, said the U.S. Air Forces in Europe spokesperson.