Assessment of the Threat
Burnham told lawmakers that the British government’s assessment indicates the plot was coordinated in Iran. "I can confirm our assessment that it is highly likely to have been coordinated in Iran, almost certainly directed by Iran’s Islamic Revolutionary Guard," Burnham said. "We will not tolerate these threats on our soil."
The incident occurred on Sept. 27, when police declared a major incident and evacuated residents from Whelford, a village about one mile from the base. Armed police and army bomb-disposal experts searched the area. Police later reported finding a quantity of an accelerant—gasoline—in three vans linked to the initial five suspects arrested at the scene, but no explosives were found.
Seven men have been arrested in connection with the alleged plot. All suspects are in their 20s; six are British nationals, and one is a dual U.K.-Iranian citizen. All suspects have been released on bail, and no charges have been filed so far.