Mullin says US 'knew' Iran would try to attack American assets in UK

Read the original at ABC News (US) ↗
ABC News (US) · collected 2026-10-01 · by Luke Barr

Quick Summary

Secretary of Homeland Security Markwayne Mullin told Fox News on Thursday that the United States had prior knowledge Iran or its proxies would attempt to attack American assets in the UK, specifically around RAF Fairford which is used by U.S. forces involved in operations against Iran. Five British nationals were arrested early Sunday near the base and later released after extensive questioning, while a sixth person, a dual U.K./Iranian citizen, was recently detained for suspicion of terrorism. Mullin stated that the U.S. had been monitoring the situation with UK officials and provided them with advance warning about the potential threat.
Written locally by qwen2.5:14b on 2026-10-01, using this article's own text rather than the other coverage of the same event (that is the story summary below).

AI analysis runs on qwen2.5:14b, locally

Story summary

In recent days, security measures at RAF Fairford, a U.S. Air Force base in Gloucestershire, England, significantly increased with armed police and roadblocks preventing access to the base. On Sunday morning, British police declared a major incident after suspicious vehicles were reported near the airbase; five UK nationals in their 20s were arrested and later released on bail for terror offenses under suspicion of involvement with explosives.

Local residents noted heavy vehicles and concrete barriers blocking entrances to the base weeks before the incident. Around 30 emergency vehicles, including police cars, ambulances, and fire engines, were stationed near the base during heightened security measures. The arrests occurred amid increased tensions between the U.S., Iran, and the UK; Iranian officials have denied involvement.

U.S. Secretary of State Marco Rubio suggested a "foreign actor" was involved, linking it to threats from adversaries like Iran, while British Prime Minister Andy Burnham indicated there are strong indications that Iran played a role in the incident, despite ongoing investigations. The U.K. and U.S. have been closely cooperating on this matter, with Burnham stating they were “on top of it.”

Written for “RAF Fairford Terror Plot Incident” on 2026-10-05, grounded in this article and the 192 other(s) covering the same event.

Signals How these are calculated →

Claims extracted
20
claim-shaped sentences
Uncertain
10%
2 of 20 hedged
Leaning
withheld
no quote in the article backed the model's score
Correction & hedging signals
58.7
corrections and hedging in what we collected; not a measure of accuracy
Outlets on this story
193
Crime & Law
Narrative spread
1
articles carrying this framing
Analyzed 2026-10-01 · how these are computed

Story

📰 RAF Fairford Terror Plot Incident
Crime & Law · 193 article(s) covering the same event. See how they differ ↓

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Compared with similar articles

This article reads unscored and hedges 10% of its claims. Each row says how that neighbour differs.
Daily Mail
⚖️ leaning not scored 🔴 6% hedged 4 of 62 📰 publisher trust 65
“Both articles describe arrests near RAF Fairford involving an attempted terrorist attack on US assets, with warnings issued by the US Embassy.”
Daily Mail
⚖️ leaning not scored 🔴 8% hedged 4 of 48 📰 publisher trust 65
“Both articles discuss the arrest of individuals near RAF Fairford, which is used by US forces and considered a target by Iran.”
Semafor
⚖️ leaning not scored 🔴 20% hedged 1 of 5 📰 publisher trust 95
“Both articles discuss the arrest of individuals suspected of plotting an attack on a UK air base used by US forces, related to tensions with Iran.”
The Hindu
⚖️ leaning not scored 🔴 7% hedged 2 of 28 📰 publisher trust 60
“Both articles refer to arrests near RAF Fairford, UK on September 27, 2026, and Iran's denial of involvement, indicating coverage of the same specific incident.”
Fox News
⚖️ leaning not scored 🔴 7% hedged 2 of 29 📰 publisher trust 69
“Both articles discuss a thwarted terror plot involving Iranian actors near a UK military base used by the United States.”
Daily Mail
⚖️ leaning not scored 🔴 11% hedged 3 of 27 📰 publisher trust 65
“While both articles discuss arrests near RAF Fairford related to potential Iranian involvement, Article A focuses on Andy Burnham's claims and the initial arrests, while Article B reports Secretary of Homeland Security Markwayne Mullin's comments about U.S. knowledge of a possible attack by Iran or its proxies.”
Evening Standard
⚖️ Leans right 🔴 10% hedged 3 of 29 📰 publisher trust 68
“Both articles describe arrests related to a suspected terror plot at RAF Fairford, implicating Iran and mentioning involvement of US and UK authorities.”
Global News
⚖️ Leans right 🔴 5% hedged 1 of 20 📰 publisher trust 64
“Both articles refer to the same incident involving the arrest of individuals near RAF Fairford, a U.S.-run military air base in England, and comments from UK and US officials regarding Iran's involvement.”
South China Morning Post
⚖️ leaning not scored 🔴 0% hedged 0 of 5 📰 publisher trust 67
“Both articles discuss Iran's involvement in suspicious activity near RAF Fairford, involving British and American assets.”
Evening Standard
⚖️ leaning not scored 🔴 2% hedged 1 of 40 📰 publisher trust 68
“Both articles discuss the arrest of five British nationals suspected of terrorism near an RAF base used by the US, indicating they are reporting on the same incident.”

Publisher

ABC News (US) · 641 article(s) · 2 correction(s) detected
Running correction rate · 2 correction(s)
2026-10-04
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Who wrote this

Luke Barr
14 article(s) here · 1 carrying a prediction
🔮 Mullin says US 'knew' Iran would try to attack American assets in UK U.K police said Thursday they arrested another man in connection with the case. The United States knew Iran or its proxies were going to "try and do an attack, possibly on a United States asset in the [United Kingdom]," Secretary of Homeland Security Markwayne Mullin said Thursday of the arrest and release of five men near a Royal Air Force base used by the U.S. Mullin told Fox News the U.S. "had already been watching" the situation with British officials and the U.S. was "giving them a heads up." His comments come after U.K. Prime Minister Andy Burnham said Wednesday he believes Iran "played a part" in last weekend's incident at a Royal Air Force base in England that hosts U.S. warplanes involved in the conflict with Iran.
🔮 " "Threaten Americans or our institutions and law enforcement will move FAST," he said in a post on social media.
🔮 She has great faith in the South Dakota judicial system and will reserve any further comments for the legal process."
2026-09-30 · assertive framing · Former DHS Secretary Kristi Noem files for divorce
🔮 The scope and sensitivity of the exposed information could raise national security concerns, particularly because the files included details about the jobs performed by military and civilian personnel.
🔮 "I am confident Director [Kash] Patel will continue to reform the FBI, combat violent crime, defend the homeland, ensure strong organizational accountability, and restore public trust in this institution of excellence."
2026-09-28 · assertive framing · FBI co-Deputy Director Andrew Bailey resigns
🔮 The FBI issued a public service announcement alert in May warning of the threat posed by ShinyHunters, which they describe as a "cyber criminal group specializing in large-scale data breaches and extortion." ShinyHunters actors "commonly use harassment strategies, sending threatening text messages and phone calls to victims and their family members, and in some cases, swatting," according to the FBI.
🔮 The FBI is assessing what information may have been compromised, sources said.
🔮 Former acting ICE Director Todd Lyons retired in May and David Venturella, a former private prisons executive, has been running the agency since then.
🔮 "The length Trump will go to cheat, lie, and steal in this upcoming election are simply beyond the pale,” Schumer said.
🔮 Richardson recounts in the book one of his employees saying the memo would "kill" them during a disaster.
Also by Luke Barr
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 14 articles by Luke Barr →

Topics

Iran Royal Air Force The United States U.K. U.S.

Subjects

Iran GPE · 9× Mullin PERSON · 5× U.S. NORP · 5× U.K. GPE · 4× Andy Burnham PERSON · 2× British NORP · 2× Royal Air Force ORG · 2× The United States GPE · 2× American NORP · 1× U.K GPE · 1×

Narrative

There are strong indications that Iran played a part in what happened over the weekend at RAF Fairford, but of course it remains an ongoing complex and serious police investigation, and of course we are working closely with our colleagues in the United States of America," Burnham said.
framing: assertive · carried by 1 article(s) · first seen 2026-10-01
🔮 Mullin says US 'knew' Iran would try to attack American assets in UK U.K police said Thursday they arrested another man in connection with the case. The United States knew Iran or its proxies were going to "try and do an attack, possibly on a United States asset in the [United Kingdom]," Secretary of Homeland Security Markwayne Mullin said Thursday of the arrest and release of five men near a Royal Air Force base used by the U.S. Mullin told Fox News the U.S. "had already been watching" the situation with British officials and the U.S. was "giving them a heads up." His comments come after U.K. Prime Minister Andy Burnham said Wednesday he believes Iran "played a part" in last weekend's incident at a Royal Air Force base in England that hosts U.S. warplanes involved in the conflict with Iran.
2026-10-01 · ABC News (US)
Mullin says US 'knew' Iran would try to attack American assets in UK · assertive framing

Claims (20 extracted, 2 hedged)

Mullin says US 'knew' Iran would try to attack American assets in UK U.K police said Thursday they arrested another man in connection with the case. The United States knew Iran or its proxies were going to "try and do an attack, possibly on a United States asset in the [United Kingdom]," Secretary of Homeland Security Markwayne Mullin said Thursday of the arrest and release of five men near a Royal Air Force base used by the U.S. Mullin told Fox News the U.S. "had already been watching" the situation with British officials and the U.S. was "giving them a heads up." His comments come after U.K. Prime Minister Andy Burnham said Wednesday he believes Iran "played a part" in last weekend's incident at a Royal Air Force base in England that hosts U.S. warplanes involved in the conflict with Iran. uncertain
that → say → Iran
"They were also feeding information to us, so this was something we were paying attention to already, we just didn't know where it was coming from" Mullin said, adding that Iran is always a threat to the United States and its allies. " asserted
Iran → feed → States
This was a little bit more specific, so we were on heightened alert about the direct threat we had here but didn't know where it was coming from, so when we saw it we were able to act quick," Mullin said. asserted
Mullin → have → it
Five British nationals from London between the ages of 23 and 25 were arrested early Sunday in possession of three vans near RAF Fairford, police said, which has long been a key hub for U.S. Air Force operations in the Middle East -- including in the conflict with Iran. asserted
which → arrest → Iran
Police said the men were suspected of terrorism and explosives offenses, prompting speculation that the detainees were planning to target the RAF base, possibly on behalf of a foreign power. uncertain
detainees → say → power
Investigators said a search of the suspects' vehicles found no improvised explosive devices and authorities said they were released on bail on Monday after "extensive interviews." asserted
they → say → interviews
On Thursday, the U.K. Counter Terrorism Policing unit announced it had arrested another man -- a dual U.K./Iranian citizen -- in connection with the case on suspicion of "preparation of terrorist acts." asserted
it → announce → acts
It also said a second man had been questioned "under caution" and that it had searched two properties. asserted
it → say → properties
Mullin expressed frustration that the five men were released, but "It doesn't mean these individuals are just running loose. asserted
individuals → express → frustration
We -- as in our partners and us -- have eyes on these five individuals. asserted
We → have → individuals
We not going to let them slip through the cracks." asserted
them → go → cracks
Asked if he planned any response to the possible attack, President Donald Trump said Wednesday the U.S. is "studying it right now. asserted
U.S. → ask → it
We're studying it. asserted
We → study → it
We're studying it very hard." asserted
We → study → it
Asked about how the U.K. has responded, Trump said, "The U.K. did release a number of people that we caught wanting to blow up a base. asserted
we → ask → base
We caught them early and I'm trying to figure out if that's for real, if they actually did it." asserted
they → catch → it
U.K. Prime Minister Andy Burnham said Wednesday that his government believed Iran "played a part" in the possible plot. " asserted
Iran → say → plot
There are strong indications that Iran played a part in what happened over the weekend at RAF Fairford, but of course it remains an ongoing complex and serious police investigation, and of course we are working closely with our colleagues in the United States of America," Burnham said. asserted
Burnham → be → America
Reacting to those accusations, Iranian Foreign Minister Aragachi said, "I can confirm Iran's belief that releasing supposed terrorists working for foreign states really says it all. asserted
releasing → react → it
You're barking up the wrong tree." asserted
You → bark → tree
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