A prisoner was arrested on suspicion of killing a fellow inmate at Coldingley Prison near Woking on Friday.

Madala Washington, 25, from south-west London, died after being attacked at the prison at around 1pm on Friday.

Surrey Police said he had been the victim of a "serious assault" at the prison, which houses around 500 inmates, and detectives have launched a murder investigation.

The Prison Service said an investigation would be carried out by the independent Prisons and Probation Ombudsman.

Coldingley is a category C training prison, meaning inmates are considered unlikely to make a determined escape attempt but cannot be trusted in open conditions.

The death comes against a backdrop of concerns about rising cases of violence in UK prisons.

There were 257 deaths in custody last year including eight homicides, more than in any other year since records started in 1978.

In 2015 Coldingley's independent monitoring board wrote to prisons minister Andrew Selous over its concerns about the jail.

Its report blamed an increase in home-made weapons at the prison and illegal drugs on cuts to the number of prison officers and staff.