POLICE have charged a fourth man over the death of Alf Deon Eades in Hakea Prison.
Guards found Eades, 46, injured in his cell on February 26.
He was rushed to Royal Perth Hospital but died on March 11.
Police charged a 22-year-old man with murder on April 8 and last Friday they charged another 22-year-old man with murder.
On Tuesday, a third person – a 21-year-old man – was also charged with murder and was due to appear in court yesterday.
Today detectives charged a fourth man – a 20-year-old man – with murder.
He is due to appear in court today.