In the village of Beck Row, Suffolk, which is situated next to RAF Mildenhall, residents reported brightly lit aerial vehicles hovering above their houses and over the base itself. Casseem Campbell, 28, said he had seen objects above his house in Beck Row.

U.S. troops in Europe reported a swarm of unidentified drones flying over several Air Force bases in the U.K. in the past week, a sighting that comes amid a growing mystery of UFO sightings near military installations.

A comprehensive look at how the situation, which an anonymous U.S. official said appears to be coordinated and not the work of hobbyists, has unfolded so

RAF Brize Norton has asked people to keep an eye out for drones as suspicious activity is reported around USAF bases across the UK.

A British government official says a criminal investigation is underway after drones were spotted recently by the U.S. Air Force over English military bases

The drones were spotted between Wednesday and Friday near RAF Lakenheath, RAF Mildenhall and RAF Feltwell. They were actively monitored after they were seen in the vicinity of and over the three bases, U.S. Air Forces Europe said in a statement.

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

RAF Brize Norton has asked people to report it if they see a drone as suspicious activity is reported around USAF bases across the UK.

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.

In a village close to a military site, residents report aerial vehicles hovering above their houses.