Over 500 pro-Palestinian protesters were arrested by London police Saturday for participating in a demonstration in support of the banned group Palestine Action.

Officers carried away activists to cheers and clapping from other demonstrators who gathered for the sit-down demonstration in the capital's Trafalgar Square.

The protesters held placards in support of the banned group Palestine Action, making them liable for arrest.

London's Metropolitan Police said on social media platform X just before midnight that they had arrested 523 people aged between 18 and 87.

Palestine Action was proscribed as a terrorist organization in July, making it a criminal offense to belong to or support the group, punishable by up to 14 years in prison.