ULSTER People’s Forum founder Willie Frazer has been arrested by police investigating loyalist flag protests.
Detectives from ‘Operation Dulcet’, set up to probe the protests and resulting violence, are also to question UPF Jamie Bryson.
Willie Frazer and Jamie Bryson 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.
However, Belfast Daily understands that ‘Operation Dulcet’ detectives are still searching for Jamie Bryson.
His home in Co Down was searched by detectives as part of the ongoing investigation.
Police have also searche the offices of loyalist groups in North Down and have towed away Jamie Bryson’s car for a forensic examination.
Union flag protests have been held since Belfast City Council voted on 3 December to limit the flying of the union flag from city hall.
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.
He has been photographed taking part in loyalist band parade carrying a UVF flag.
Earlier this month Mr Frazer’s Audi A4 car was torched outside his home on the Tandragee Road in Markethill.
He and his family were evacuated after a passing police patrol spotted the flames and the smoke coming from his car.