The Attorney General will not investigate a judge who freed a Met Police inspector who then apparently killed himself and his mother-in-law.
Gary Weddell's body was found in woodland
After he was charged with strangling his wife Sandra, Garry Weddell, 47, was released from custody ahead of trial.
His body was found near a shooting club in Hertfordshire. The body of his mother-in-law Traute Maxfield, 70, was found at a house in Gustard Wood.
The Attorney General's spokesman said it was a "matter for the judiciary".
Mr Weddell's wife Sandra, 44, was found dead in the garage of their family home in Lancot Avenue, Dunstable, Bedfordshire, on 31 January last year.
Post-mortem tests revealed the nurse and exam invigilator was strangled with a cable tie.
Mr Weddell was charged with her murder and faking her suicide but was later granted bail at the crown court by His Honour Judge Bevan QC.
MP Mike Penning said the courts should not put people at risk
Mr Weddell was found dead in a field at Broomhills Shooting Club in Markyate, about 11 miles away from Mrs Maxfield's village home, on Saturday morning.
His mother-in-law's body was then also found. Both died from bullet wounds.
Mike Penning, MP for Hemel Hempstead, made a written request to the Attorney General Baroness Scotland calling for an inquiry.
A spokesman for the Attorney General said: "The Attorney General has received a letter from Mike Penning and will respond to that letter, but to suggest that this amounts to an investigation would be inaccurate. This remains a matter for the judiciary."
Mr Weddell was granted bail with a surety of £200,000, put up by his lawyer brother, on condition that he hand in his gun licence and stay away from his mother-in-law.
His defence lawyers had argued he had complied with the investigation and, as a police officer, would be in danger in prison.
The grounds of Broomhills Shooting Club were searched
Judge Bevan said on Monday that he could not remember the circumstances of the application.
Shadow justice secretary Nick Herbert said: "This case raises very serious questions and the public will find it extraordinary that anybody on a murder charge should be given bail."
Mr Weddell was a Police Federation representative based in Barnet, north London, with more than 25 years' police experience.
He was due to go on trial in May.
The Ministry of Justice (MoJ) and Office for Judicial Complaints (OJC) also said they would not hold an inquiry into the judge's decision.