A husband phoned emergency services to confess to killing his wife before taking his own life, an inquest heard.Anthony Buxton, 71, and his 69-year-old wife Michelle Buxton were found at a property in Camelford, Cornwall, on the evening of September 24 last year.An inquest at Cornwall Coroner's Court on Tuesday heard that Mr Buxton had earlier confessed to killing his partner on a phone call to 999. On the same call, a female was heard groaning and calling for help. Police armed with a Taser later forced their way into the property and found Mrs Buxton lying on her back in the kitchen.Mr Buxton, who had lost a considerable amount of blood, was discovered nearby with a steak knife stuck in his chest. Both casualties were treated and given CPR by ambulance crews but could not be saved. PC Jacob Double, one of the first officers on the scene, said he and a colleague were responding to a call from a man stating 'he had killed his wife'.He said in a written statement: 'As we were travelling further information came to light, which stated in the call to ambulance a female voice could be heard groaning and saying, "Help", and a male voice was heard saying, "I've done it, no one can stop me, I've killed her".' Anthony Buxton, 71, strangled his wife to death before fatally stabbing himself, an inquest this week heard Michelle Buxton, 69, died from a 'prolonged forceful compression of the neck'A post-mortem found that Mrs Buxton had died from a 'prolonged forceful compression of the neck'. Mr Buxton, meanwhile, died from a 'complex stab wound' which entered through the chest and pierced his heart.Dr Russell Delaney, who carried out the post-mortem, said the wound was self-inflicted. The couple's son Daniel told the inquest his father had become unusually quiet in the months before his death and was becoming paranoid.Mr Buxton, a civilian police worker, said: 'Eventually it got to the point where mum seemed to be struggling and dad was getting quite anxious and really not wanting to tell us any information and would get defensive when pressed.'It was anxiety trying to assuage any fears he might have. We installed CCTV cameras in the house because he was concerned there was an overarching delusion he had.'He had this idea or beliefs that an organised crime gang was targeting him and had access to the house and had bugged the house with microphones and cameras and his family were in danger.'The overarching goal of this crime gang was to exhort mum and dad for police secrets from me because I work for the police.'Georgina Clark, from the Cornwall Partnership Mental Health Trust, said Mr Buxton had been referred to them by his GP on August 29 and an assessment was carried out on September 2.'Because of Mr Buxton's age and the possibility of an organic cause, as there had also been mention from the GP of short-term memory loss over the past couple of years, it was felt it should be discussed with the dementia and older people's service first,' she said.'The assessing clinician took that to the duty worker and had that discussion and what they said was that he noted to be presenting with severe anxiety and that would need to be treated first as someone who is very anxious that can affect their ability to retain memory.'Andrew Cox, senior coroner for Cornwall, asked Ms Clark: 'Mr Buxton was not a natural fit for any service because he is not typically presenting as a dementia patient, and he is too old to fit into the early intervention for psychosis?'You are left with having to make a best fit where there isn't an obvious pathway for him to follow? Is that fair?'She replied: 'To a degree. I think that service would be offered by the community mental health team.'The inquest heard Mr Buxton was referred to the community mental health team who felt talking therapies would be appropriate to deal with his anxiety.Detective Constable Tom Graham, who investigated both deaths, said there was no evidence of third party involvement.Mr Cox returned a conclusion of unlawful killing for Mrs Buxton and said her husband had taken his own life.'I think what has become apparent subsequent to these events is that no one had the full picture,' he said.'What is abundantly clear from the papers is that no one, family members or mental health practitioners, seriously felt that Michelle was at risk of harm from her husband Anthony.'I have accepted as fact that on September 24 Anthony strangled his wife and I'm also further going to accept the evidence from the police that having done that he's then stabbed himself in the chest.'If Anthony had survived, he would inevitably have been charged with a homicide offence.'Addressing the family, the coroner added: 'This is a dreadful set of circumstances, completely unexpected, and you have my deepest sympathies for what has occurred.'For confidential support, call Samaritans on 116 123, visit samaritans.org or thecalmzone.net/get-support