Man admits killing Lisa Clay and Joseph Chadwick 20 September 2013 Last updated at 12:31 A man has admitted stabbing to death his girlfriend and six year-old son in Lancashire. The bodies of Lisa Clay, 40, and Joseph Chadwick were found at their home in Lowlands Road, Bolton-le-Sands on 9 April, Preston Crown Court heard Paul Chadwick, 34, admitted two counts of manslaughter on the grounds of diminished responsibility. His plea of not guilty to murder was accepted by the Crown and he will be sentenced by the court on 30 October. Stuart Denney QC, prosecuting, told the court that two psychiatrists who examined the defendant were in agreement that it was a case of diminished responsibility. Probably never know Chadwick was taken to hospital with stab wounds after the killings and was later transferred to custody. He appeared in court on videolink from Guild Lodge psychiatric hospital in Preston and spoke only to confirm his name and enter his pleas. The court heard an application had been made to transfer him permanently to Guild Lodge. Recorder of Preston Judge Anthony Russell QC remanded Chadwick in custody. Det Supt Andy Murphy said: "This was an absolutely tragic case involving the death of a woman and a young child in horrific circumstances. While we will probably never know exactly why Paul Chadwick did what he did, I am satisfied with today's guilty plea which at least spares the families the ordeal of a trial.