Police have arrested two people in connection with the west Belfast murder of John Mongan.
Mr Mongan (30), was hacked and beaten to death in front of his heavily-pregnant wife at their Belfast home in February. His sons are also believed to have witnessed the attack.
His wife has since given birth to their third son.
Police arrested a 24-year-old youth following searches in the Rosemount and Shantallow areas of Derry overnight.
A woman was arrested this afternoon in connection with the killing. It is understood she was taken into custody in the Belfast area.
Two men and a youth have already been charged with the killing.
