Despite the release, Taylor said the men will remain under investigation as law enforcement continues working to establish the circumstances of the plot.
Taylor also stated that Counter Terrorism Policing is keeping an open mind to the possibility that the planned attack may have been geopolitically motivated and carried out by individuals knowingly or unknowingly working on behalf of a foreign state.
All five of the suspects set to be released were male, UK nationals between the ages of 23 and 25. They were detained on suspicion of preparation of a terrorist attack and offenses under the Explosives Act.
Taylor’s announcement came after Iran’s embassy in London denied reports that the plot had links to the Islamic Republic, labeling the accusations as “Iranophobia propaganda” in a post on X/Twitter.
The Telegraph reported on Sunday that British counterterrorism police were probing the possibility that the five suspects arrested for the plot had connections to Tehran due to the Islamic Revolutionary Guard Corps (IRGC) having previously threatened the base.
The embassy labeled the report as “unfounded and malicious speculations,” alleging that the reports “serve no purpose other than to fuel Iranophobia propaganda in the UK.”
“The Islamic Republic of Iran reserves the right to take appropriate legal measures, as necessary, to safeguard the rights and interests of the country and its people in response to misleading and damaging media narratives,” the embassy concluded.
UK Counter Terrorism Policing official Vicki Evans earlier on Monday acknowledged that the incident has triggered widespread speculation that the plot may have been motivated by geopolitical factors, but urged the public to give law enforcement space to fully investigate.
“This is a hugely complex and large-scale operation, involving local and national policing, the Defence Ministry, and local agencies, who are working together to progress the investigation and support for the community,” Evans added.