A 74-year-old woman who was arrested during an anti-racism rally in Belfast city centre has been released, pending a report to the Public Prosecution Service.
She was detained in Linenhall Street on Saturday afternoon on suspicion of possession of an article that indicates support for a proscribed organisation.
The woman was wearing a T-shirt with the slogan “We are all Palestine Action”.
Palestine Action became a proscribed organisation in July under the Terrorism Act, making membership of or support for the group a criminal offence.
The Police Service of Northern Ireland (PSNI) had previously issued a statement claiming the woman arrested was 62 years old. This has since been corrected.
A 43-year-old man arrested on suspicion of disorderly behaviour has been issued with a Community Resolution Notice.
Human rights organisation Amnesty said he was from a “small anti-immigration counter protest”.
In London, police arrested 474 people on Saturday at a demonstration in support of Palestine Action.
The Metropolitan Police said 466 protesters were arrested for supporting the group, five for assaults on police officers, two for public order offences, and one for a racially aggravated offence.
MPs voted to proscribe the group after activists broke into RAF Brize Norton in June, spraying two Voyager aircraft with red paint and causing £7m worth of damage. Palestine Action said it was behind the incident.