31 August 2012 Last updated at 13:13 ET

Richard Kosa killing: CCTV pictures released

The pair were filmed on CCTV outside Sinfin library

Pictures of a man and a woman filmed on CCTV near the Derby library where a man was fatally attacked, have been issued by police.

Richard Kosa, 40, from Sinfin, was assaulted outside the building near Grampian Way earlier this month. He died two days later in hospital.

Officers believe the pair helped Mr Kosa, but have not yet come forward.

Pavol Jurik, 40, has been charged with grievous bodily harm with intent to endanger life.

An inquest at Derby Coroner's Court heard the Slovakian man had suffered a serious head injury in the attack, which took place shortly after 15:00 BST on 18 August.

Mr Jurik has been remanded in custody and is due to appear at Southern Derbyshire Magistrates' Court on 3 September.