A man who stabbed his neighbour to death after getting annoyed at his son revving a motorbike has been found guilty of murder.
Jamie Crosbie, 48, was found guilty by a jury at Norwich Crown Court on Thursday for stabbing 41-year-old Dean Allsop 17 times after Dean's son Mikey had revved the engine last year.
Norfolk police said Crosbie was also found guilty of wounding with intent of two women, Mr Allsop's partner Louise Newell and friend and neighbour Kerryn Johnson, who had come out to help.
He was cleared of two counts of attempted murder.
During the disturbance in Primrose Crescent on 14 April, Thorpe St Andrew, the force said "some of the stab wounds were inflicted when the victim was lying face-down and motionless" in a "savage attack".
Senior investigating officer Detective Chief Inspector Phill Gray, from the Norfolk and Suffolk Major Investigation Team, said: "This was a cold-blooded attack by a man intent on causing extreme harm to others.
"Crosbie is an extremely violent man who has no place in society, and we welcome the jury's verdict today."
In a statement, Dean's partner Louise Newell said: "I cannot put into words how this has affected our whole family.
"My children have lost their hero and I have lost my chosen person - the person I chose to spend my life with.
"My best friend, soulmate, my first love.
"Our lives will never be the same without Dean, but we will continue to keep his memory alive."
Crosbie will be sentenced at a later date.