RAF Fairford became the focus of a major security operation on Sunday after five men were arrested near the Gloucestershire airbase on suspicion of preparing a terrorist act, following reports of three suspicious vehicles travelling towards the site.
Police were alerted at about 12.45am after the vehicles were seen heading in the direction of the base, which is used by the US military. Armed officers responded and detained five men in the nearby village of Whelford, initially on suspicion of offences under the Explosives Act. Counter Terrorism Policing later took over the investigation and said the men had also been arrested on suspicion of preparing a terrorist act under the Terrorism Act.
The arrests triggered a large-scale emergency response around the vehicles. A 400-metre cordon was established while a British Army explosive ordnance disposal team examined them. About 85 households were evacuated as a precaution, with a local leisure centre opened for residents who could not stay with friends or family.
Authorities stressed that the investigation was still in its early stages and urged the public not to speculate about what had happened.
The circumstances have attracted particular attention because of RAF Fairford’s role in US military operations involving Iran. The Gloucestershire base has been used by American bombers for limited operations against Iranian missile sites, following Britain’s decision to allow US military action from bases in the UK.
That role has made RAF Fairford a more sensitive security site in recent months. In July, Iran’s Islamic Revolutionary Guard Corps warned Britain that military facilities used in attacks against Iranian territory could be regarded as legitimate targets. British authorities have not, however, established any connection between that warning and Sunday’s arrests.
Materials recovered from the vehicles were being examined by bomb disposal specialists to determine whether they were dangerous and whether they could have been used in an attack. Investigators have also been examining the circumstances surrounding the vehicles and the people arrested.
The possibility of a connection to Iran has been raised in security discussions and media reports, but there has been no official finding that Iran was responsible. Iranian authorities have rejected suggestions linking Tehran to the arrests. The identities and motive of the suspects were not initially made public, and police have not confirmed that RAF Fairford itself was the intended target.
US President Donald Trump said the men had been “looking to do big damage” and claimed they had been under surveillance for some time. British authorities have not publicly confirmed those details, leaving investigators to establish what the suspects were allegedly planning and whether the vehicles were connected to the airbase.
Security measures were also increased at RAF Lakenheath in eastern England, another UK base used by the US military. Reuters reported seeing armoured vehicles and soldiers guarding entrances there on Sunday.
The incident has also placed local residents at the centre of an investigation that began with a report about suspicious vehicles moving through the countryside in the early hours of the morning. The subsequent evacuation and bomb disposal operation caused significant disruption in Whelford, although police said the situation was contained.
The US Air Force declined to comment on specific security arrangements but said its units in Britain remained vigilant and would take appropriate measures to protect military personnel, civilian employees and their families.
For investigators, the central questions remain unresolved. Police have yet to publicly establish what the men were allegedly preparing, whether the materials found in the vehicles were capable of causing harm, and whether the airbase was actually their intended destination. Counter-terrorism officers and bomb disposal specialists are continuing to examine the evidence as authorities work to determine the full circumstances surrounding the arrests.
