Police have launched a murder inquiry into the death of a 67-year-old man who suffered multiple stab wounds at his home last night.
A woman in her 60s and was arrested at the scene was being quizzed by detectives tonight.
The victim was named locally as former shop owner Rajasingam Kumarathas, who was living in Burdock Close, Wymondham, Norfolk.
Police were called to the father-of-two's home at 11.50pm on Saturday after "concerns for the safety of an occupant were raised".
A Norfolk Police statement said the man in the house was found seriously injured with stab wounds to his chest and head.
He was taken to the Norfolk and Norwich University Hospital where he died today.
A woman in her 60s was arrested at the scene in connection with the assault and remains in police custody.
Detective Superintendent Kate Thacker who is leading the Norfolk Police inquiry said: "We are in the very early stages of our investigation with detectives continuing their enquiries this afternoon.
"However, I can confirm that we believe all those involved were known to each other and we are not looking for anyone else in connection with the incident at this time."
The three bedroom house which Mr and Mrs Kumarathas bought for £195,000 in 2008 remained cordoned off and under police guard tonight.
Mr Kumarathas who is of Sri Lankan origin used to own the Spar supermarket around 100 yards from his home, but is said to have given up the business three-years-ago.
A neighbour in her early 40s, who had just moved to the area two weeks ago, said she saw six police cars and an ambulance arrive at the scene.
She "We just saw blue lights flashing through our door. We saw people running in all directions and thought someone had maybe been attacked.
"It is not nice especially when you have just moved somewhere you think is a nice area."
Another neighbour said: "There were police cars parked all around the square and all the police were running towards the house over there.
"They were only here for about half an hour. She was led across the square in handcuffs and put in a police car just outside our house.
"It was 15 to 20 minutes before they brought a trolley to the outside of the ambulance and brought him out and they were giving him CPR."
Anyone who may have witnessed the incident or has information concerning it is asked to contact Norwich CID on 101.