Three people have been arrested after a man was stabbed to death outside a pub in Bristol, police said.The 51-year-old victim died in hospital in the early hours of Sunday morning after sustaining knife and head wounds in an attack outside the Park House pub in Bedminster, on Saturday night.Another man, aged 38, was taken to the Bristol Royal Infirmary with a stab wound and broken jaw.Detectives from Avon and Somerset Police later arrested three men - aged 30, 27 and 19 - at a nearby house on St John's Lane.Police spokesman Dan Mountain said: "One of the victims, a 51-year-old local man, suffered serious stab and head injuries as a result of the assault and was taken to Frenchay Hospital."In the early hours of Sunday, the man died at Frenchay."Mr Mountain said the other victim was "stable".He added: "The men, aged 30, 27 and 19 years, currently remain in custody at Broadbury Road and Trinity Road police stations."Forensic inquiries were continuing and the pub and a property remains cordoned off.