Salesman Martin Mahoney said he commented on "the awful business" when he called on Mr Huntley on 7 August about some cleaning materials.

BBC: NEWS | UK | Huntley 'thought girls were dead'

In a documentary called A Personal Journey With Martin Scorsese Through American Movies, Penn commented on the level of violence that he included in the film.

BBC: Bonnie and Clyde director Arthur Penn dies aged 88