COPS yesterday revealed how two young sisters died after their bodies were tragically found alongside their dad and aunt.
Bartlomiej Kuczynski, 45, his daughters Jasmin, 12, and Natasha, eight, and the girls' aunt Kanticha Noon, 36, were found dead at their home in Costessey, Norwich on Friday.
Norfolk Police confirmed on Sunday Bartlomiej and Kanticha both died of stab wounds to the neck.
And post mortem examinations were undertaken on the young girls today, tragically revealing they died the same way.
The deaths of Jasmin, Natasha and Kanticha are being treated as a suspected 'murder-suicide'.
Bartlomiej's death was not being treated as suspicious and no one else is wanted in connection with the deaths, police said.
It came after mystery deepened surrounding the deaths - with more details of the dad's mental health assessment emerging.
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Floral tributes and two unicorn toys have been left a short distance from the house on the quiet residential street - with more being added each day.
They sit outside the police cordon, as the house where the horror unfolded remains taped off.
One heartbreaking tribute read: "Jasmine, you were such a sweet, caring girl, yourself and your sister didn't deserve to have your lives taken away.
"You would always be smiling in primary school. Fly high beautiful girls."
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Another person penned: "You will be missed. I'm sorry to whoever was in the family and is going through it. Sorry Jasmin."
Detective Chief Inspector Chris Burgess, who is leading the investigation, today said: “We understand how incredibly shocking this incident is for all involved and for the wider community and that this latest update adds to the sense of heartbreak.
"Our thoughts are with the family of those found at the property grieving such a traumatic loss.
“We would like to thank the community for their help and will continue to provide reassurance patrols in the area.
"A cordon will remain on at the address whilst we finalise our detailed examination of the scene.”
Jasmine, you were such a sweet, caring girl, yourself and your sister didn't deserve to have your lives taken away
Cops confirmed they have referred themselves to the police watchdog, after not responding to a call to the home earlier that morning.
The force said it had received a 999 call from the home not long before the bodies were found.
Sources confirmed that Mr Kuczynski was the man who made the call at 6am, which police failed to send officers out on.
However, officers were not deployed until a second call from a member of the public shortly before 7am.
Providing details on the phone call, Charmaine Arbouin, IOPC regional director, said: "Norfolk Constabulary established that the man had made a 999 call to the force shortly before 6am on 19 January.
"During that call the man expressed concerns for his own mental state saying he was confused.
"He was advised to seek medical advice and police did not attend.
"At around 7am the force received a call from a dog walker concerned for the welfare of those within the home.
"Officers attended shortly after and, tragically, found the man, a woman and two children dead."
How mystery still remains over quadruple tragedy
QUESTIONS have been mounting over how the four deaths happened after it was revealed dad Bartlomiej called 999.
Despite warning officers over his mental state, he was told to seek medical advice.
Here are some unanswered questions that remain over the tragedy.
Why did cops fail to respond to the call?
Norfolk Police have still not confirmed why they didn't send officers to the home when Bartlomiej expressed concerns.
He told 999 he had "concerns" for his mental state and was "confused".
The IOPC is now investigating why that call was ignored.
What is the 'missing person' enquiry?
In a second IOPC referral, it was revealed police had prior contact with the family before the tragedy.
Officers confirmed this was in connection to a missing person's enquiry in December 14.
It was reported Bartlomiej had gone missing but was later found wandering in woodland.
Why did cops only respond to the second call?
The alarm was raised an hour after the first 999 call when a dog walker raised concerns for the welfare of people inside.
It is not yet clear why that phonecall was responded to but the dad's was ignored.
Norfolk Police also said it will investigate and will be examining if the contact its officers had with the man was "appropriate and in line with force policy, training and procedures".
It also referred itself to the watchdog for attending the home on December 14 in connection with a missing person enquiry.
He was later discovered close to his home and was taken to the Norfolk and Norwich University Hospital to undergo a mental health assessment.
But it has now emerged the dad left before any tests could be taken, with the hospital now releasing further details of his visit.
NNUH carried out a comprehensive review but the hospital does not provide mental health services, reports.
A spokesman said: "We can confirm that the patient was taken to the emergency department by police on December 14.
"Following a comprehensive clinical assessment, the patient was assessed as having mental capacity and he left the unit before being reviewed again by the team.”
It was revealed in recent days the girls' mother was at work as a caretaker when the four were found, according to Kanticha's best friend Naty Wathanakul.
She told how the aunt arrived in the UK on December 27 and was apparently due to go home next month.
Kanticha ran UK-based kid's clothing store Malishop with her sister.
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Describing her as a "caring" woman, Naty told : "She loved her nieces, I always saw their pictures together.
"She is a single woman, no boyfriend, no husband, that's why she spent most of her time with those lovely girls."
If you are affected by any of the issues raised in this article, please call the Samaritans for free on 116123.