The four people found dead at a property near Norwich last week have been named by police.
Bartolmiej Kuczynski, 45, Kanticha Sukpengpanao, 36, Jasmin Kuczynska, 12, and Natasha Kuczynska, nine, were found after a member of the public raised concerns for their welfare.
An emergency 999 call was made by a man from the address in Costessey where the four people were found, but police failed to respond, it emerged on Sunday.
Officers discovered the bodies, including a father and two young girls, believed to be his daughters, more than an hour later at around 7.15am on Friday after forcing their way into the property in Allan Bedford Crescent, Costessey, near Norwich.
Police outside the house in Costessey near Norwich
They had been alerted by a member of the public, who was concerned for the welfare of the people inside, shortly before 7am.
Home Office post-mortem examinations carried out on Sunday established the woman died as a result of stab wounds to the neck while the man died as a result of a stab wound to the neck.
Post-mortem examinations for the two girls will be carried out tomorrow, police said.
Detectives confirmed on Sunday they were not looking for anyone else in connection with the incident.
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