Detective Superintendent Kevin Flint, from Nottinghamshire Police, told ITV News in 2010 that he could not understand the mentality behind someone killing a teenager and then going straight to the pub.
Paul Hutchinson was jailed for life for the murder of Colette Aram who was killed 30 years ago.
More top news
Police are investigating the death of a teenager who died shortly after an amateur boxing match held last night.
PC Keith Palmer will be given a lasting tribute after he lost his life "in order to keep others safe" during Westminster terror attack.
Here are pictures of today's rally in Victoria Square, called "Not in our Name: Muslims United Against Terrorism"