CHILLING details have revealed a family's final hours before their bodies were discovered in a property in Costessey, near Norwich.
Mystery surrounds the deaths of Bartlomiej Kuczynski, 45, as well as his 12-year-old daughter Jasmin and her seven-year-old sister, with a 36-year-old woman yet to be named.
Neighbours are reeling over the losses and described the children as "beautiful" and "lovely sisters" who were "really happy".
Cops have admitted they didn't respond to the first 999 call made by the girls' dad at 6am on January 19 - but no answer has been given on why.
And the force have since said they are not looking for anyone else in connection with the quadruple death.
However, much of the case remains shrouded in mystery.
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Here, we take a look at what we do know about the tragic deaths.
December 14 - Mystery missing persons enquiry
On December 14, Norfolk cops attended the property in Costessey after a missing persons enquiry.
Unconfirmed reports say Mr Kuczynski was the person missing last month, according to
The dad-of-two is said to have disappeared and was later found wandering nearby.
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However, this is still yet to be confirmed, as investigations into the tragedy continue.
Police referred themselves to the Independent Office of Police Conduct (IOPC) over their involvement with the family in December.
January 19, 6am - Dad calls 999 but cops don't attend the property
The force confirmed they had received a call from a man at the address at 6am on January 19.
Sources confirmed yesterday evening that Mr Kuczynski was the man who made the call, which police failed to send officers out on.
However, the reasons why he made the emergency call are still unknown.
The force has not explained why it did not send officers in response to Mr Kuczynski's call at 6am.
Norfolk Police confirmed yesterday it has referred itself to the Independent Office of Police Conduct - separate to the incident on December 14.
Cops have also not explained why the initial 999 call was not responded to.
But operational decision-making is not usually a matter of public record.
January 19, just before 7am - Member of the public calls 999
Cops were only sent to the house after receiving a second call at 7am from a member of the public.
It is said the caller mentioned they were concerned about the people inside.
However, police have not released the identity of the member of the public who alerted them to the tragedy.
All that has been released is that they called at 7am on the morning of January 19.
They have not spoken in public or identified themselves as of yet, nor have they been named by locals in the area.
January 19, 7.15am - Cops force entry to the house and find four bodies
Cops arrived on the scene within 15 minutes and forced their way into the house in Costessey near Norwich after a frantic call from a member of the public.
The bodies of two young girls, a 36-year-old woman and a 45-year-old man, named locally as Bartlomiej Kuczynski, were found in the house on Allan Bedford Crescent.
However, the identity of the woman found alongside the Kuczynski family is still yet to be confirmed.
She is known to have been 36 years old, but neither police nor locals of Costessey, Norfolk, where the bodies were found, have named her.
It is just awful. The two girls were lovely sisters and beautiful girls."
Jocelyn Atienza, 50
It is understood that she was a member of the same family and that she was "visiting" the house at the time of her death.
Sources say the girls' aunt had moved in to help look after the youngsters as their dad suffered from mental health issues, the reports.
Mr Kuczynski’s Thai-born wife Nanthaka Kuczynska who was known as Nan had reportedly not been seen by neighbours for months.
Officers said post-mortems would be held on Sunday to find the cause of the deaths of the man and woman.
Cops did confirm that all four had suffered "injuries" and said that it was an "isolated incident".
Neighbours reveal their shock
Devastated locals described the children as "beautiful" and "lovely sisters" who were "really happy".
Jasmin was a pupil at Taverham High School while her sister was a pupil at the Queen’s Hill Primary School on the Queen’s Hill estate where they lived.
Well-wishers including some crying girls left flowers in their memory beside the police cordon outside their semi-detached home.
Neighbour Jocelyn Atienza said: "It is just awful. The two girls were lovely sisters and beautiful girls.
"They were nice girls who were a little shy. We used to see them walking around together.
"They would look really happy when they were out with friends.
"The older one would catch the bus to school, and her little sister would walk to the primary school by herself.
"Their mother was friendly and we always used to say hi hello to each other in the street."
Nina Crisan, whose son knew 12-year-old Jasmine Kuczynski, described her as a "very, very sweet girl" who had a "calm and cool energy".
She told "she was just a lovely, lovely kid" and that the incident had come as an "absolute shock" to the local community.
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She said that it was a tight-knit community and even if you didn't know someone directly, you saw each other through the children or from dog walking.
Speaking anonymously to Sky News, a boy who knew Jasmine said: "We grew up together. She never held a grudge, she was always kind and caring to everyone."