Joseph Eke (L) sentenced to 18 years for the murder of two-year-old Harry House
Joseph Eke showed no emotion as he was sentenced to serve a minimum of 18 years for the murder of Harry House on May 26 last year.
The 22-year-old inflicted the "catastrophic" fatal injuries when he "lost his temper" while left alone with the toddler at their family home in Broadmayne, Dorset, for a few minutes while the child's mother had popped to the shops.
In a statement read to the court, Harry's mother Lauren O'Neill said of the defendant: "He has ruined so many people's lives and not shown an ounce of remorse. We are truly heart-broken, he was such a special boy."
CCTV of Joseph Eke
CCTV of Joseph Eke in a police interview
Following a three-week trial, a jury at Winchester Crown Court found Eke guilty of murder and causing grievous bodily harm.
We are truly heart-broken, he was such a special boy
Lauren O'Neill – Mother
Sentencing him, the judge, Mrs Justice May, told Eke: "You wilfully, fatally, failed Harry when you assaulted him, taking his life."
She added that Miss O'Neill had been "in denial" about the abuse carried out by Eke in the last days of Harry's life which had left him covered in bruises and suffering from broken ribs which was the subject of the GBH charge.
She said: "No-one will ever know the full extent of your mistreatment of Harry."
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Harry died as a result of a blunt-force impact to the abdomen the court was told
Adam Feest prosecuting told the court that Harry died as a result of a blunt-force impact to the abdomen, probably by punching or kicking, which was of such force that it split the pancreas in two.
He also suffered a skull fracture in the attack.
Miss O'Neill, 22, told the trial how her son went "all floppy" in her arms before he deteriorated rapidly and died as paramedics tried to save his life.
The court heard that in July last year, Eke assaulted Miss O'Neill, including slapping her with a Subway sandwich, after she "took a swipe" at him after he accused her of killing Harry.
Eke, of Upwey, Weymouth, had denied the offences and had told the court: "I didn't kill him, I wouldn't kill him. I wouldn't harm a kid."