A PARANOID schizophrenic from Yate smothered an elderly relative to death "on God's orders" because he thought she had stolen his soul.

Crazed Ryan Guest, 34, suffocated his step-grandmother Una Dorney, 87, with a pillow while visiting her care home.

He felt a pain in his chest while moving her which he believed was her stealing his soul - and the only way to retrieve it was to kill her.

Guest was arrested shortly after the attack but while on remand he attempted to murder a fellow inmate who he believed had cursed him.

He admitted the manslaughter of Alzheimer's sufferer Una on the grounds of diminished responsibility at Bristol Crown Court.

Guest also pleaded guilty to the attempted murder of prison lag Mohamed Sharif, who remains in a coma almost six months after the attack.

The court heard how he had grown close to step-grandmother after she became widowed and moved into Oaktree House care home in 2013.

He visited her on a daily basis but the day before the killing he was reading the Shakespeare work, Rape of Lucrece, when he claims God began talking to him and told him to carry out the offence.

The next morning, June 18 this year, he went to visit his step-grandmother, where he held a pillow over her face for five minutes.

Stephen Mooney, prosecuting, told the court: "He had lifted (Una) up and he felt a pain in his chest which made him think she may have taken his soul.

"The day before the killing he was reading Shakespeare's work, the Rape of Lucrece and during that time he received a message from God.

"It was in that minute he decided to kill her (Una). He later told police how he had held a pillow against her head for five minutes. He remembers her scratching and struggling.

"He claimed he killed her because it was cruel for her to be living that way, as people were walking around the house like zombies."

Jobless Guest was arrested at the home where he lived with his mother in Yate shortly after the attack and was held on remand at HMP Horfield in Bristol.

He began hearing prayers and chanting in his head, in a Somali accent, and convinced himself that Mr Sharif had cursed him.

Guest launched an attack on the Somali inmate in the prison's exercise yard, repeatedly kicking him in the head and leaving him in a constant vegetative state.

Mr Mooney told the hearing: "Whilst in prison he began to hear voices in his head. Chanting and prayers.

"He remembered having spoken to Mohamed Sharif and thought he was the Prophet Muhammad.

"He thought that Mohamed had cursed him. He thought that the only way to stop the voices would be to kill Mohamed."

Guest remained emotionless throughout the hearing on Monday, where he was flanked by four carers and security staff in the dock.

He was told he could spend a lifetime in hospital after he was handed an order under section 37 of the Mental Health Act with a section 41 Mental Health Act restriction order.

Sentencing, Honourable Mr Justice Dingemans, said: "It appears that about a year or so before (the attacks) you had developed psychotic beliefs in conspiracy, electromagnetism and vampires.

"At the time of the killings you were experiencing active symptoms of psychotic illness.

"That affected your ability to know what you were doing, to form rational judgements and to exert self control.

"In both cases you formed a clear intention to kill, and there was premeditation and planning in both attacks.

"In my judgement the appropriate order to make is a hospital order.

"I consider that a restriction order is necessary for the protection of the public from serious harm because these offences have shown appalling violence that you can inflict when suffering delusional beliefs.

"This might mean you are never released, and it will ensure you are not released when you remain a danger to the public."