Logan Mwangi: Mother, step-father teen jailed for murdering boy, 5, found dead in river

A mother and stepfather have been jailed for life over the murder of her five-year-old son.

John Cole, 40, was told he would spend at least 29 years behind bars while Angharad Williamson, 31, would serve a minimum of 28 years’ imprisonment.

A 14-year-old boy, who cannot be named because of his age, was detained for a minimum of 15 years after also being found guilty of Logan’s murder.

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Logan’s body was discovered in the River Ogmore in Sarn, Bridgend, last July, just a few hundred metres from the flat he shared with his family.

The child, also known as Logan Williamson, had suffered 56 “catastrophic” external injuries similar to those found in victims of high-speed crashes or a fall from a height.

A view of the section of the River Ogmore in Sarn, Bridgend, Wales, where the body of five-year-old Logan Mwangi was found

His mother Williamson and her partner Cole were convicted of murder by a jury of five men and seven women at Cardiff Crown Court in April after five hours of deliberation.

A 14-year-old boy, who cannot be named because of his age, was also found guilty of murder.

Williamson fell to the floor of the dock screaming “no, no, no” as she was found guilty of her son’s murder at a previous hearing.

She struggled with the dock officers as she was led away, shouting at Cole: “You lying motherf****** murderer. You liar.”

Police body worn video footage of Angharad Williamson, 31, the mother of five-year-old Logan Mwangi

Logan’s father Ben Mwangi was also in court to hear the jury return its verdicts.

The court previously heard Williamson reported Logan missing at 5.45am on 31 July 2021 and accused a woman, against whom she held a grudge, of abducting him.

Logan was found wearing only mis-matched pyjamas in the river by police a short time later and was confirmed dead in hospital.

CCTV footage shown to the jury during the trial captured Cole and the teenage boy, who was 13 years old at the time, leaving the family’s address in the early hours of 31 July.

The mother and stepfather of Logan Mwangi, five, have been found guilty of his murder (South Wales Police/PA)

Cole was carrying something in his arms towards the river that he later confirmed was Logan’s dead body. Experts said Logan’s injuries could have only been caused by a “brutal and sustained assault” inflicted in the hours, or days, prior to his death. They also said the injuries were “consistent with child abuse”.

His stammer is said to have worsened, becoming particularly bad around Cole. He wet himself more frequently and began self-harming.

Friends of the couple said Cole told them he did not like Logan, and others said his attitude changed after becoming obsessed with the idea Williamson had cheated with Logan’s father.

Logan Mwangi’s dinosaur pyjama top recovered at the scene where his body was found

After Williamson gave birth to his child, Cole was reluctant to let Logan see the baby and later claimed the boy had tried to smother the infant.

Medics made a safeguarding referral to the police after Logan suffered a broken arm in August 2020, with Williamson saying he had fallen down the stairs.

She took him to hospital the day after the incident and said she thought he had only dislocated his shoulder and had tried to put it back. Later she told a friend the youth had confessed to pushing Logan down the stairs but it was not until January last year she told the police.

Speaking after the verdicts, Detective Inspector Lianne Rees, who led the murder investigation, said: “Logan was a beautiful, bright and innocent five-year-old little boy with his whole life ahead of him.

Douglas Mateo

Douglas holds a position as a content writer at Neptune Pine. His academic qualifications in journalism and home science have offered her a wide base from which to line various topics. He has a proficiency in scripting articles related to the Health industry, including new findings, disease-related, or epidemic-related news. Apart from this, Douglas writes an independent blog and assists people in living healthy life.