Four people arrested for questioning about the murder of a dissident republican in Northern Ireland have been released without charge, police said today.
One man remains in custody being questioned about the killing of Martin Conlon, who died after being abducted and shot in Co Armagh last week.
Detectives have been examining several possible motives for the murder of the 35-year-old last week, including the possibility that he was attacked because he was gay.
They have also been checking whether he was the victim of a fall-out with former associates linked to the Real IRA.
Mr Conlon, who lived at Railway Street, Armagh, died in hospital after being found unconscious at the side of a country road near the neighbouring village of Keady last Monday.
He was freed from jail in the Irish Republic last year.
Mr Conlon had been one of six men jailed in Dublin in March 2001 after pleading guilty to training people in the use of firearms.
His body was discovered close to the Madden estate outside Keady and about a mile-and-a-half from where his silver Volkswagen Passat car was later found burnt-out.