A paranoid schizophrenic was left alone for a night in a Bradford hotel by psychiatric health workers before he returned to his home and stabbed his mother's fianc to death, it emerged today.

The parents of John Hampson are now vowing to take legal action against Bradford District Care Trust over their mentally-ill son's treatment.

His mother, Deborah Beney, said she had spent weeks asking for help for her 27-year-old son, who on Monday was ordered to be detained indefinitely under the Mental Health Act by a Bradford Crown Court judge for the manslaughter of her fianc Derek Brotherton, 42, at their home in Lynfield Drive, Daisy Hill, Bradford.

And her former husband, John Welbourne, said he was furious that his son had spent the night alone at the New Beehive Inn in Westgate instead of being placed in secure surroundings.

Mr Welbourne, 56, of North Avenue, Bradford, said: "With John's state of mind I am disgusted that they left him in a pub and gave him money."

He added: "I have spoken to a solicitor and I want to take a legal action against the trust."

Hampson, a former pupil of Grange Upper School, had suffered mental health problems since he was 18 and had been a patient at Lynfield Mount Hospital, Bradford, for two years.

He had been out of hospital for only seven months when his family become increasingly concerned about his behaviour after he stopped taking his medication.

Miss Beney, 47, said she had tried repeatedly to get her son readmitted to the hospital. She said a doctor and a community psychiatric nurse had arrived at her home and taken him away the night before Mr Brotherton was killed in July last year.

The mother-of-seven, said: "It was my belief that they were taking him to hospital not a pub hotel.

"I still cannot believe that I got on their case to get my son to hospital just to get a doctor bribing him out of here with a £5 note and taking him to a hotel.

"This would not have happened if they had taken him to hospital. Derek would still be alive and my son would be happy.

"When John was in hospital Derek used to go to see him every day. He loved him. That is why what happened is so hideous."

Mrs Beney said she had also been desperately trying to get Bradford Community Housing Trust to re-house her since the incident. She said chunks missing from the door were a reminder of what happened that night.

"I am still having to come back to the scene of the crime every day."

Bradford District Care Trust, which runs Lynfield Mount Hospital, has held an internal inquiry into the case.

An independent inquiry will now also be held by the West Yorkshire Strategic Health Authority following the completion of court proceedings.

A Bradford District Care Trust spokesman said: "We offer our sincere sympathies to Mr Hampson's family during this extremely difficult time and are keen to continue to give them as much support as possible.

"At all times we have endeavoured to provide Mr Hampson with the best possible care.

"We are very willing to meet again with the family to discuss any concerns that they might have over Mr Hampson's care.

"A senior member of staff had already met his mother and had agreed to meet her again after completion of the court proceedings to discuss any issues.

"At each stage we believe that appropriate care and support was offered and available to Mr Hampson."

A strategic health authority spokesman said: "An independent chairman of the inquiry will be appointed in due course and terms of reference will be set. These often include looking at the care the patient was receiving at the time of the event and what improvements can be made by everyone involved.

"Bradford District Care Trust has already held an internal inquiry into this incident and its findings will also be taken into account by the independent inquiry.

"Once the inquiry has been completed, this will be presented to a public board meeting of WYSHA."