The BBC's Newsroom Southeast on the Daniel Joseph case

Nineteen-year-old Daniel Joseph was sentenced to indefinite detention in Broadmoor hospital by the Old Bailey on Monday, following the death in January of Carla Thompson.

Ms Thompson, who lived in south London, was beaten up by Joseph after she took him under her wing.

Her friend Agnes Erume was also injured in the attack. The two women were found bound together in the street. Ms Thompson, a committed Christian, died in hospital.

A former psychiatric patient herself, she had taken Mr Joseph in after his release from hospital and encouraged him not to see his doctor or take his medicine.

Failures

Marjorie Wallace, chief executive of schizophrenia charity Sane, said the case was the worst she had seen.

Majorie Wallace: Carla Thomspon's death 'an unbelievable tragedy'

She said Mr Joseph had been let down by the three health authorities - Bethlem and Maudsley NHS trust, Lambeth Healthcare Trust and Pathfinder Mental Health services - and Lambeth social services department who should have looked after him as well as South Thames Regional Health Authority.

"One good professional relationship was all he needed," she said. She also hit out at Health Secretary Frank Dobson.

"The buck has to stop with the Secretary of State for Health. How many authorities do you need to look after one disturbed young man?" she asked.

Ms Wallace said allowing Mr Joseph and Ms Thompson to live together and Mr Joseph to go without treatment was "a recipe for disaster", particularly given that his mother was calling for him to be put back in hospital.

"This is an unbelievable tragedy. How can we restore public confidence in community care when these tragic events happen?" she asked.

Investigations

The health authorities involved have ordered an independent inquiry of the case.