Detectives have confirmed that the man who was murdered in Gilford was Eamonn Darren O’Hanlon.
The 36-year-old was from north Belfast.
Mr O’Hanlon died after he was stabbed outside an address in the Hill Street area during the early hours of this morning, Saturday 21 May.
A fourth person has now been arrested in connection with the killing and all suspects remain in custody at this time.