A safeguarding review has found that Kamil Ahmad’s murder was "avoidable", after it emerged his killer was discharged from a private mental health hospital hours before the attack based on "incomplete information".
Jeffrey Barry, who suffered with schizophrenia and paranoia, stabbed neighbour Kamil Ahmad, 48, in supported flats in Bristol in July 2016, after being released from hospital.
On the day of his release Barry spent more than four hours drinking in two bars before returning to his home shortly before midnight.
A couple of hours later he is seen on CCTV climbing the stairs to Kamil's second-floor flat, where he knocked on his door and attacked him with a knife.
The Bristol Safeguarding Adults Board, which published today's review, said the decision to discharge Barry from hospital had "tragic consequences".
The report pointed out that the tribunal had failed to contact the views of Mr Barry's brother, the Community Psychiatric Consultant, or Milestones Trust which helped with his behaviour.
The police were also not informed of the Mental Health Tribunal or contacted as potential contributors.
The report concluded the tribunal "did not follow the recommendations of the professionals involved and did not fully appreciate the significance of the problems in the accommodation and the inherent risk of Barry's return."
Kamil’s death has led to changes across agencies, including better co-ordination between care providers and with care co-ordinators.
The way in which beds are allocated to people in the community who are experiencing a mental health crisis and may pose a risk to themselves or others is also being reviewed.