A man and woman who were among four people found in a house near Norwich died from stab wounds.

The bodies of structural engineer Bartlomiaj Kuczynski,  Jasmin Kuczynska, 12, and her seven-year-old sister, and a 36-year-old woman, were discovered at the property in Allan Bedford Crescent at the Queen's Hill estate in Costessey, near Norwich, at around 7.15am on Friday.

Police said the woman, who is related to Mr Kuczynski and his daughters, “was visiting and didn’t live at the property”.

Eastern Daily Press: Bartlomiaj Kuczynski was found dead alongside his two daughters and a woman on Friday morningBartlomiaj Kuczynski was found dead alongside his two daughters and a woman on Friday morning (Image: Facebook)READ MORE: Four bodies found in Norwich shocks people of Queen's Hills

Post-mortem examinations were carried out on Mr Kuczynski and the woman today.

Mr Kuczynski died a result of a single stab wound to the neck while the woman died from stab wounds to the neck. 

Post-mortem examinations on the two girls will be carried out on Wednesday, January 24.

Detective Chief Inspector Chris Burgess, who is leading the investigation, said: "Following this latest development we remain satisfied no one else was involved in this incident.

"The latest information will only add to the distress and shock felt by members of the local community and it's why, from the outset, we've been determined to carry out detailed and methodical enquiries to make sure we fully understand how this incident happened."

Eastern Daily Press: A police cordon remains outside the property on the Queen's Hill estateA police cordon remains outside the property on the Queen's Hill estate (Image: Newsquest)READ MORE: Norwich father found dead with daughters had 'gone missing'

Norfolk Police revealed that a 999 call was made by a man from the house at 6am but they did not deploy resources to the address.

This newspaper understands that it was made by Mr Kuczynski. 

No more is known at this stage about the nature of the call.

Police were then called again at just before 7am, after a member of the public raised concerns for the welfare of people inside.

After this call, officers were sent to the house at around 7.15am and they forced entry and found the bodies.

The force has referred itself to the Independent Office of Police Conduct (IOPC) regarding the 6am call.