A son arrested on suspicion of murdering his parents at their Midland home has been sectioned under the Mental Health Act.
Pin Chang, 58, and his wife Quoi Chang, 50, were found stabbed to death at their home in Hermitage Road, Solihull, on July 7.
Their son, 23, has been released from hospital, where he was treated for serious injuries under police guard.
West Midlands Police said he remained unfit for questioning but was due to be moved to a secure unit where he would be assessed by psychiatrists.
Det Insp Martin Slevin, who is leading the double murder inquiry, said: “We continue to investigate the circumstances around these tragic deaths, however we are not looking for anyone else in connection with the murders. The couple’s family continue to be supported by specialist family liaison officers at this time.”
It was revealed earlier this month that police and ambulance crews visited the family’s home just 45 minutes before the couple died.
Police left at 4.48am “after liaison” with the ambulance team, which left at 5.06am.
It was understood it was decided to refer the son for a mental health assessment, to be carried out at a later date.
But another 999 call was received at 5.17am.
Ambulance crews arrived back at the property at 5.26am, followed by the same police officers at 5.33am.
They found the couple with fatal stab wounds and their son seriously injured.
Locals spoke of their shock after the grim discoverery.
Theo Sotiriou, 35, who runs a shop across the road, said: “One of the family used to come in the shop quite regularly. I’m shocked to hear what has happened. Solihull is supposed to be one of the nicest places to live yet this sort of thing happens on our doorstep.”