Flag protest: Willie Frazer and Jamie Bryson face questions
Police are to question two men prominent in the loyalist union flag protests in Belfast.
Jamie Bryson and Willie Frazer will be questioned on suspicion of organising and participating in unlawful parades.
Mr Frazer, 52, was arrested in his home village of Markethill, County Armagh.
There have been protests since Belfast City Council voted on 3 December to limit the flying of the union flag from city hall.
Mr Bryson said, in a video posted on the internet, that he had not attacked anybody or been involved in any acts of violence.
Mr Frazer and Mr Bryson, 23, are both spokesmen for the Ulster People's Forum, which was set up in the wake of the protests.
Mr Frazer is a well-known campaigner on loyalist issues, particularly in border areas.
He was the director of the victims' group Families Acting for Innocent Relatives (Fair) until late in 2012.
Fair was founded by Mr Frazer 13 years previously to support victims of republican violence.
Mr Bryson, from Donaghadee in County Down, is a community activist who rose to prominence as a result of the flag protest.