Detectives have made a new appeal for information about the murder of a man in front of his daughter in Co Down 22 years ago.

John Warnock, who helped invent the PDF and co-founded Adobe Systems, has died at the age of 82. The Silicon Valley entrepreneur and computer scientist died on Saturday surrounded by family, Adobe said in a statement.

Neil Warnock has announced his retirement from management, drawing a line under a 42-year career in which he won a record number of Football League promotions and managed an unprecedented 1,603 matches.