U.S. Secretary of State Marco Rubio stated that an incident at RAF Fairford in the UK 'clearly involved' a foreign actor, calling it a 'very serious situation' despite offering no evidence. Five men were arrested early Sunday on suspicion of explosives violations and preparing a terrorist act after tips from local residents but were released on bail Monday evening, surprising officials and the public. Rubio praised British authorities for their cooperation with the U.S. and emphasized the gravity of the event, saying 'what almost happened, what could have happened' was deeply concerning.

He specifically referenced Iran as a country capable of such an attack, noting its open threats against American interests globally, though he did not name Iran directly as the culprit. The Iranian Embassy in London condemned the speculation as 'unfounded and malicious.' British officials, including Prime Minister Andy Burnham, urged against speculation while the investigation continues. President Trump also suggested a possible Iranian connection but declined to elaborate.

Rubio indicated further details would emerge in the coming days.