A 45-year-old man found dead alongside two young girls and a 36-year-old woman in Norwich has been named as Bartlomiej Kuczynski.
Their bodies were found at a house in Allan Bedford Crescent, Costessey, Norfolk, after police forced their way into the property following a call from a member of the public shortly before 7am on Friday.
Police previously said all four were found with injuries, and that they were part of the same family.
“Three of the people are believed to reside at the address and another one not permanently,” said Detective Chief Inspector Chris Burgess of Norfolk Police.
“The man and two children lived at the address, but the woman involved was visiting and did not live at the property.”
He said post-mortem examinations would be held to establish the cause of their deaths.
Police also confirmed officers attended the property on 14 December last year in relation to a missing person inquiry.
Mr Burgess added: “I’m confident this is an isolated incident but, as I say, it’s very early on, I’m keeping an open mind.
“I would stress to the community, let’s be very aware of what we share on social media without confirmed information.
“We don’t want to cause any undue distress or give false information that might actually hamper the investigation rather than support it.”
A cordon remains in place at the scene and detectives from Norfolk and Suffolk police forces are leading the investigation.
The Bishop of Norwich Graham Usher said local clergy were offering support in the communities they serve and would be opening churches over the weekend for those who wish to pay tribute.