Police have said they are not looking for anyone else in connection with a house fire in Bolton, Greater Manchester which killed three people in the early hours of Monday.
The bodies of architect Hassan Rafie, 49, and his law student wife, Mahnaz, 48, were discovered in the blaze at the family home.
Post-mortem examinations showed Mrs Rafie died from stab wounds and Mr Rafie from smoke inhalation and burns.
Mrs Rafie's mother, Dolleh Joseph, 74, was rescued by firefighters from an upstairs bedroom but died soon after in hospital from the effects of smoke inhalation and burns.
More top news
Menna Fitzpatrick has become one of Britain's most decorated Paralympic athletes
A police officer has been sacked for stealing £50 from a wallet that was dropped outside a pub.