The United States hastily removed all bombers from Britain, what is the reason?

The United States has withdrawn all long-range bombers deployed to the United Kingdom to their home bases after an unidentified threat, CNN reported, citing a US official.

The official said all US bombers based at RAF Fairford in Britain have been redeployed to their home bases in the United States, but did not give details of the threat the planes were being withdrawn from.

A source familiar with the matter described the threat as a "real event." Normally, the US military would move bombers to other bases in the region if a security threat arose. But this time they were brought back directly to the United States, which the official said was relatively unusual.

The UK Ministry of Defence has not commented on the matter.

The US B-1 bombers were deployed from RAF Fairford in Britain. The aircraft have been used in the ongoing war against Iran. The base also serves as an operating location for the US Global Strike Command, which is responsible for conducting long-range strikes.

The evacuation of the US bombers comes at a time when an investigation into an alleged conspiracy surrounding the Fairford base is underway.

On September 27, British police arrested five people on suspicion of terrorism and explosives-related offences near the base. They were aged between 23 and 25 and were described as British citizens from the London area. They were later released on bail. No explosives were found in the three vans at the scene, police said.

US President Donald Trump criticized the quick release of the detainees. He said, "I wouldn't have done that."

Then, last Thursday, a 25-year-old British-Iranian dual citizen was also arrested on suspicion of involvement in the alleged plot.

British Prime Minister Andy Burnham said last week that there were "strong indications" of Iranian involvement in the incident. He told the BBC on September 30 that the British government believed Iran had played some role.

Earlier, US Secretary of State Marco Rubio also said that there was a "foreign party" involved in the alleged conspiracy. However, he did not disclose details about this.

Meanwhile, Iran has denied any involvement in the incident. Tehran has called the allegations baseless and summoned the British ambassador, according to state media reports.