Two more people have been arrested on suspicion of a terror offence after two aircraft were vandalised at RAF Brize Norton in Oxfordshire.
Counter Terrorism Policing South East said the men, aged 22 and 24 and both from London, were arrested on Saturday afternoon on suspicion of the commission, preparation or instigation of acts of terrorism, contrary to Section 41 of the Terrorism Act 2000.
On Thursday, police said a woman, aged 29 of no fixed address, and two men, aged 36 and 24 from London, had been taken into police custody after the incident at RAF Brize Norton on 20 June.
A 41-year-old woman, of no fixed address, was also arrested on suspicion of assisting an offender, they previously said.
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The group posted a video online claiming it was behind the vandalism at the Oxfordshire airbase last Friday, saying activists had damaged two military planes at the base.
Palestine Action – which focuses its campaigns on multinational arms dealers and has previously targeted corporate banks – said two activists “broke into the largest air force base in Britain and used electric scooters to swiftly manoeuvre towards the planes”.
Repurposed fire extinguishers were used to spray red paint into the turbine engines of two Airbus Voyagers, while further damage was made using crowbars.
“Red paint, symbolising Palestinian bloodshed was also sprayed across the runway and a Palestine flag was left on the scene,” a statement by the group said.
Brize Norton is the largest RAF station, with approximately 5,800 service personnel, 300 civilian staff and 1,200 contractors.
A security review was launched across the “whole defence estate” following the breach, which was condemned as “absolutely staggering” by Ben Obese-Jecty, a Tory MP and former Army officer.
Sir Keir Starmer condemned the “act of vandalism” as “disgraceful”, adding: “Our Armed Forces represent the very best of Britain and put their lives on the line for us every day. It is our responsibility to support those who defend us.”
Home Secretary Yvette Cooper said on Monday that Palestine Action will be proscribed as a terrorist organisation following the breach at RAF Brize Norton.
She said a draft proscription order will be laid in parliament next week, and if passed, it will make it illegal to be a member of, or invite support for, Palestine Action.