Warning: This story contains images of blood Jamie Crosby stabbed Dean Alsop 17 times after becoming upset when the victim’s teenage son started the engine of a motorbike in April last year, Norwich Crown Court heard. Police body cam video showed Crosbie’s face and hands covered in blood after the killing, as he told officers who arrested him on suspicion of murder: “That’s good, I’m really happy about that.” Norfolk Police described a scene of “carnage” when officers arrived after Crosby had also stabbed Mr Alsop’s partner Louise Newell and neighbor Kerin Cray, who had come out to help. The 48-year-old killer, who was convicted of murder and wounding with intent after a trial last month, was jailed for life on Wednesday and told he will serve at least 28 years. Sentencing Crosby, Judge Anthony Bate told him: “I consider you a very dangerous man.” Police described Crosby as an “extremely violent man” and said Alsop had been killed in a “cold-blooded attack”, in which he had been stabbed as he lay face down and motionless. On the night of the murder, father-of-three Mr Alsop and his son were working on their motorbikes on Primrose Crescent in Thorpe St Andrew, near Norwich. Image: Father-of-three Dean Allsop (pictured) was murdered by his neighbor Jamie Crosbie. Photo: Norfolk Constabulary Mr Crosbie’s son had switched on the engine of one of the motorbikes which disturbed Crosbie, who went to his window and gestured at the couple, the court heard. This led to a verbal altercation in the street before Crosbie armed himself with a knife and a saw. After seeing his neighbor with the weapons, Mr Allsop called 999 and said he was being threatened by his neighbor who had a knife. During the call, Mr Alsop was heard telling his son to go inside before the 41-year-old was attacked by Crosby and stabbed multiple times. Mr Allsop’s son went home and armed himself with a knife before returning to help his father, only to find him badly injured and covered in blood. Image: Jamie Crosbie found guilty of murder. Photo: Norfolk Constabulary The killer stabbed the victim’s partner in the chest Crosbie then tried to attack Mr Allsop’s son, who fought back and left the killer with head and arm injuries. The teenager then returned home again and raised the alarm with his mother. Crosby returned to his home before returning to the scene minutes later where Mr Alsop had collapsed and was lying face down and motionless on the ground. Crosby stabbed Mr Alsop again in the back before turning on the victim’s partner and neighbor who had come out to help, Norfolk police said. Image: Police body cam video shows Jamie Crosbie covered in blood. Pic: Norfolk Police Image: Crosbie’s bloodied hands can be seen in the footage. Photo: Norfolk Constabulary Mr Allsop was pronounced dead at the scene and a post-mortem examination revealed a fatal stab wound to the chest. The court heard that Crosbie had used two knives and a saw to kill his victim. Mr Allsop’s partner, Ms Newell, was stabbed in the chest and suffered a deep cut to her head, while neighbor Ms Kray suffered a serious stab wound to the neck. Crosbie was first arrested on suspicion of assault and then murder when he told officers: “That’s good, I’m very happy about it, killing people isn’t always a bad thing.” Image: A police officer aimed a Taser at Crosbie during his arrest. Photo: Norfolk Police Image: Blood splattered on the floor near Crosbie. Photo: Norfolk Constabulary Police said the killing bore “striking similarities” to an earlier incident in 2018 where Crosby threatened Alsop with a knife and a hammer after Alsop put rubbish in his neighbour’s wheelie bin. Crosbie was convicted of weapons and criminal damage offenses and given a suspended prison sentence for the 2018 incident. After his arrest after Mr Allsop’s death, Crosbie denied murder and pleaded guilty to the lesser offense of manslaughter, which the prosecution did not accept. He was convicted by a jury of the murder and wounding of two women and acquitted of two counts of attempted murder. Image: Crosby told officers: ‘Killing people isn’t always a bad thing.’ Photo: Norfolk Constabulary Victim’s partner’s tribute to ‘best friend’ and ‘soulmate’ In a statement after Crosbie’s sentencing, Mr Allsop’s partner Ms Newell said: “I can’t put into words how this has affected our whole family. “My children lost their hero and I lost my chosen one – the person I chose to spend my life with. “My best friend, soul mate, my first love. “Our lives will never be the same without Dean, but we will continue to keep his memory alive.” Senior investigating officer Detective Chief Inspector Phill Gray said: “This was a cold-blooded attack by a man intent on causing extreme harm to others. “Dean suffered 17 stab wounds to his body, some of which were inflicted while he was lying face down and motionless. “Crosby’s vicious attack didn’t stop there; he stabbed two people who had come to Dean’s aid, one suffering from arterial bleeding in her neck. “Crosby is an extremely violent man who has no place in society.”
