Shadow home secretary Yvette Cooper said it was "deeply troubling" that a 999 call not was responded to an hour before four people were found dead near Norwich.
Ms Cooper was a guest on Sunday with Laura Kuenssberg and one of the main topics was the police response to the four bodies found at a property at the Queen's Hills estate in Costessey on Friday.
Police forced entry into the house in Allan Bedford Crescent at around 7.15am, after a call from a concerned member of the public, and made the tragic discovery.
READ MORE: Police 'not looking for anyone else' in connection with four deaths at house
The four people were engineer Bartlomiaj Kuczynski, 45, Jasmin Kuczynska, 12, her seven-year-old sister and a 36-year-old woman, who was "visiting the property".
It later emerged that an earlier 999 call was made by a man in the house, understood to be Mr Kuczynski, at 6am on Friday but Norfolk Police did not deploy resources.
The force has since referred itself to the Independent Office of Police Conduct (IOPC).
READ MORE: 'Close-knit community' rallies together after four found dead in Costessey
This was one of the topics that Ms Cooper discussed on the show on Sunday morning and she said the Norfolk tragedy was "deeply troubling".
She said: "We obviously don't know the details of this individual case, but I do think there is a wider issue here about police responses to 999 calls.
"Rightly, this case has now been referred for investigation because there does appear to have been a 999 call that wasn't responded to.
READ MORE: Family death house 999 follows proposed police changes to mental health calls
She continued: "The police are having to pick up the pieces from all kinds of different crises and they are often overstretched.
"But we need to make sure people have the confidence that if they are in an emergency the police will be there when they need them.
"I think too often people don't feel like that is the case."
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