The British police have arrested two men and two women for a recent raid on RAF Biz Norton air base near Oxford and damage to warplanes.
The four are charged with terrorism-related offenses.
Two men and a woman are charged with the invasion and a second with helping the attackers, Sky News reports.
They are a 29-year-old woman of no fixed abode and two men aged 36 and 24 from London. The fourth woman, 41, has no permanent address.
The Palestine Action group had uploaded video of their raid on the base last Friday to the Internet.
They used electric scooters to reach the aircraft and spray red paint that they had in fire extinguishers on them. They poured the paint on the engines while causing damage with iron bars.
Ask me anything
Explore related questions
