Two children were among the people found dead at a home in Costessey, police have confirmed.
Officers were called to Allan Bedford Crescent shortly before 7am following a call from a member of the public.
Police forced entry into the property this morning and found the bodies of four people inside.
READ MORE: Live updates after four bodies found at home in Costessey
Detective Chief Inspector Chris Burgess has confirmed that a man, aged 45, and woman, aged 36, and two young children, both girls, were found at the address.
The 45-year-old man who is believed to have died at the address has been named locally as Bartlomiej Kuczynski.
All four people are believed to be known to one another and enquiries are under way to formally identify them.
Detective Burgess said: "We do believe they were all family members at this time.
"Three of the people are believed to have resided at the address and another non-permanently."
A police cordon is in place in Allan Bedford Crescent and detectives from the Norfolk and Suffolk Major Investigation Team are leading the investigation.
Detective Chief Inspector Chris Burgess, from the Norfolk and Suffolk Major Investigation Team, said: "Our investigation is in the very early stages and this is clearly a very distressing and tragic incident.
"While we’re following a number of lines of enquiry, at this time we believe this is an isolated incident.
"I understand that news of this incident will be shocking to the local community and as soon as we can we will release more information."
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