A 46-year-old man has been arrested in connection with the murder of prison officer David Black, the Police Service of Northern Ireland said today.
Over 1,000 mourners thronged Molesworth Presbyterian Church and adjoining hall in Cookstown, Co Tyrone, yesterday, for the funeral of Mr Black, the 52-year-old the prison officer murdered on his way to work in Maghaberry Prison, last Thursday.
He was the first prison officer to be murdered in the North in nearly 20 years.
The man was arrested in the Lurgan area. He has been taken to Antrim police station for questioning.
Three men previously held in connection with the murder have been released without charge.
Two were arrested on Friday morning in the Lurgan area and both were released unconditionally on Sunday night, according to the PSNI.
A 29-year-old suspect arrested in Co Leitrim on Friday night was released from Garda custody on Monday and a file is being prepared for the DPP.