A murder investigation has been launched after a prisoner was killed inside HMP Bristol.

Avon and Somerset Police say they were called at 9.30am on Monday, June 5 by prison staff who reported that a man, aged in his 30s, had been pronounced deceased.

A post-mortem has now been carried out and the preliminary findings are injuries to his neck which caused his death.

A 34-year-old man - who is also a prisoner at HMP Bristol - has been arrested on suspicion of murder and a separate wounding with intent offence relating to a second male prisoner. 

Gazette Series: HMP Bristol is located near Filton on Cambridge Road HMP Bristol is located near Filton on Cambridge Road (Image: Avon and Somerset Police)

Senior investigating officer Detective Inspector Nadine Partridge, of the Major Crime Investigation Team, said: “The man’s next of kin have been informed and our thoughts are with them at this difficult time.

"They will be supported throughout the course of our enquiries.

“A 34-year-old man has been arrested on suspicion of murder and a separate wounding with intent offence relating to a second male prisoner, who did not sustain serious injury.

“We can confirm the man we have arrested was also a prisoner at HMP Bristol.

"He is currently in police custody.”

Police are asking anyone with information relating to these incidents to call police on 101 and quote reference number 5223131135.