THIS is the chilling moment a killer son laughed as he was arrested for murdering his mum after a frenzied attack in her home.
Lewis Bush, 25, subjected Kelly Pitt, 44, to a two-year abuse campaign and was on bail at the time of the killing for attacking her.
On May 10, the monster punched, kicked and stamped on his mum as she desperately screamed down the phone to her daughter.
He then left her body in her home in Newport, Wales, where she was found two days later.
Footage has now been released of Bush. who has been jailed for life for murder, from when he was arrested.
As the thug was handcuffed, he asks officers: “Murder? Are you joking me?
“What? My mum is dead? Serious? You are joking me? My mum’s gone?”
Bush can then be seen asking about his wellbeing as he is booked into a custody suite at the police station.
He asks: “You won’t harm me or nothing will you?
“It seems like you’re all going to fill me in.”
Newport Crown Court heard how Bush carried out a “ferocious and sustained assault” on his mum.
As he verbally abused her, Kelly begged daughter Jordan down the phone to call the police.
Tragically, she never phoned for help and instead messaged Kelly for two days to see if she was OK.
Jordan also rang her brother, who told her the mum was unwell in bed and in “no fit state” to see her.
A neighbour later found “battered” Kelly on a blood-soaked bed covered in a duvet with broken glass and clumps of hair surrounding her.
A post-mortem found the gran had suffered “severe blunt-force trauma to the head, neck and trunk”.
Kelly also had 41 rib fractures and would have suffered “considerable physical pain before her death”.
After the murder, Bush left her for dead and popped to the shops to buy a bottle of Stella lager.
In a victim impact statement, daughter Jordan Bush spoke of her regret at not calling the police but said she thought things would be sorted by the next day, as they had been previously.
“I have to live with that guilt every day,” she added.
Addressing her brother in the dock, Jordan said: “Our mother will never get to see her granddaughter grow up because of what you did.
“I am now alone without a mum, sister or brother because you are no brother of mine.”
Bush was jailed for life with a minimum of 16 years after he changed his plea to guilty just weeks before a trial was due to start.
Judge Daniel Williams said: “Over the years, the court has heard, you subjected your poor mother to a great deal of violence.
“You bullied her and others in your family. You were on bail for having assaulted your mother when you murdered her.
“That Kelly’s life should end as it did is a wrong that no sentence will right.”
