A heartbreaking revelation emerged today as police confirmed that two girls discovered alongside the bodies of a man and a woman in Costessey died of knife wounds. The Home Office post-mortem examination conducted on Wednesday, January 24, determined that both girls, provisionally named as Jasmin Kuczynska, aged 12, and Natasha Kuczynska, aged eight, succumbed to knife wounds to the neck.

The four bodies, provisionally named as Bartlomiej Kuczynski, 45, Kanticha Sukpengpanao, 36, Jasmin Kuczynska, and Natasha Kuczynska, were discovered by police officers at a house in Allan Bedford Crescent on Friday, January 19, following a distressing call from a member of the public that morning.

Previous Home Office post-mortem examinations carried out on Sunday, January 21, revealed that Kanticha Sukpengpanao died from stab wounds to the neck, while Bartlomiej Kuczynski died from a stab wound to the neck.

Detectives have now confirmed that the deaths of Kanticha, Jasmin, and Natasha are being treated as murder. The death of Bartlomiej is not considered suspicious, and officers are not seeking anyone else in connection with the deaths. The investigative team, led by Detective Chief Inspector Chris Burgess, will continue their inquiries for the coronial process.

Detective Burgess expressed an understanding of the shocking impact on all involved and the broader community, acknowledging the sense of heartbreak. The community’s assistance was thanked, and reassurance patrols will continue in the area. A cordon will remain at the address as investigators finalize their detailed examination of the scene.

The incident has been referred to the Independent Office of Police Conduct (IOPC) due to a 999 call made by a man at the address before the incident, which did not result in the deployment of officers. Additionally, police contact at the address on December 14, related to a missing person enquiry, is under IOPC scrutiny.