News of the World 'undermined axe murder inquiry'
17 July 2014 Last updated at 20:36 BST
A retired detective has accused News of the World journalists of attempting "to undermine" the police investigation into an axe murder.
Daniel Morgan, a private investigator, was killed in 1987. He was allegedly about to expose police corruption.
Det Ch Supt David Cook believes links between the newspaper and ex-detectives he was investigating led to him being turned on by the tabloid.
News UK, the owner of the now defunct Sunday red top, is yet to comment.