What has happened since four deaths in a small town?

Exactly one year ago, a small town was left shocked after a neighbourhood became a crime scene.

Police arrived at a house in Costessey on the outskirts of Norwich to find the bodies of four people, including two children, who were found to have died from stab wounds.

What has happened since the deaths and what investigations are still to come?

On Thursday 14 December 2023, Norfolk Police attended a property in Allan Bedford Crescent in Costessey, near Norwich, in relation to a missing person inquiry.

Thirty-six days later on 19 January, the bodies of a man, a woman and two girls, aged 12 and eight, were found at the same property.

Two separate inquiries, into the conduct of police and an NHS Trust, are yet to be carried out.

Found at the address were the bodies of Bartlomiej Kuczynski, 45, his sister-in-law Kanticha Sukpengpanao, 36, and his daughters Jasmin Kuczynska, 12, and Natasha Kuczynska, eight.

The children attended local schools.

Dr Roger Harris, head teacher of Taverham High School described Jasmin as a "lovely young lady" and Matthew Cross, head teacher of Queen's Hill Primary School, described Natasha as "one of those pupils you wanted in your class".

Post-mortem examinations found the two girls and Ms Sukpengpanao, who had been visiting, all died from stab wounds to the neck.

It was found that Mr Kuczynski also died from stab wounds. However, Norfolk Police said his death was not being treated as suspicious.

More than an hour before the bodies were discovered, a 999 call had been made from the address.

The Independent Office for Police Conduct (IOPC) confirmed it was made by Mr Kuczynski, who said he was confused and worried about his mental state.

Officers did not attend and he was advised to seek medical advice and contact the NHS on 111.

At 07:15 GMT Norfolk Police did attend after receiving a call from a concerned member of the public, and officers discovered the bodies.

After the deaths, Caroline Donovan, chief executive of the Norfolk and Suffolk NHS Foundation Trust (NSFT), which deals with mental health, said Mr Kuczynski he had been "known to our services".

She said: "We will be undertaking our own full externally-led serious incident review to ensure any learning is identified and, of course, work with partners to collaborate with any external investigations."

It emerged Mr Kuczynski had been taken to the Norfolk and Norwich University Hospital by police in December 2023 and had discharged himself after he was assessed as having "mental capacity".

Later Norfolk Police referred itself to the IOPC over its failure to respond to the initial call made from the property.

A gross misconduct notice was issued against a police civilian worker who has now returned to work, but remains on restricted duties and is now in a different role.

An inquiry by the IOPC into how Norfolk Police responded to the incident is in its final stages and is due to be published before the spring.

The NSFT said the trust was assisting with an independent investigation and a joint domestic homicide review in regards to Kuczynski's contact with the service.

Anthony Deery, the trust's chief nurse added: "A timeline for publication of the review is not yet available.

"We offer our condolences to everyone affected by this tragic incident."

The inquests into the deaths of Ms Sukpengpanao, Jasmin and Natasha are due to take place on 2 June.

However, a separate inquest will be held into the death of Mr Kuczynski.

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