The Police Service of Northern Ireland has welcomed independent charity Crimestoppers' offer of a £10,000 reward for information leading to the arrest and conviction of those responsible for the murder of prison officer David Black.
Detectives are conducting an extensive investigation into David Black's murder.
A key element of this investigation will be information which is provided by members of our community.
If the reward encourages some individuals to come forward, this will be of benefit to all our efforts as we work to secure convictions against Mr Black's killers."
Three men, aged 31, 29 and 44, have been arrested following the killing of prison officer David Black in Northern Ireland.
Leaders in Northern Ireland have condemned the "horrific" motorway murder of a veteran prison officer by suspected dissident republicans.