Paranoid schizophrenic Peter Holboll admits killing his mother A paranoid schizophrenic has pleaded guilty to the manslaughter of his 76-year-old mother in London. Peter Holboll, 44, admitted manslaughter on the grounds of diminished responsibility. The Old Bailey heard he stabbed his mother, Tamara, before setting fire to her flat in Kentish Town in May. He also pleaded guilty to arson. Five people in flats above managed to escape the blaze unhurt. Overly dramatic The court heard that in the days before Ms Holboll's death, both she and her son had pleaded with mental health services for him to be admitted to hospital because his mental health was deteriorating. Edward Brown QC for the prosecution said they were in contact with South Camden Rehab and Recovery Team (CRRT) and CRISIS, a team of professionals able to provide rapid assessment and support. Following inquiries, the Holboll's were told there were no beds available and it was safe to send him home. Notes written by staff at CRRT also recorded Ms Holboll as being "overly dramatic" after she was adamant someone should take her son away. Mr Holboll's involvement with the Mental Health Services dates back to 1994. He has been sectioned under the Mental Health Act on 10 separate occasions.