NewsUK NewsPrisonsDonald Gaote-Oueyeya, 26, attacked John Henry Sayers at high-security HMP Frankland16:49, 18 May 2026Updated 17:55, 18 May 2026A murderer will spend a further four years in jail after he attacked another inmate by slashing him in the neck.‌John Henry Sayers was left hospitalised after being attacked by Donald Gaote-Oueyeya at HMP Frankland in April last year.‌Gaote-Oueyeya, 26, was serving a life sentence for killing a 17-year-old boy during a gang attack in Wandsworth, London, when he was also 17, Chronicle Live reports.‌A hearing at Teesside Crown Court was told how shortly after 6pm on April 30, 2025, prisoners at HMP Frankland were out of their cells and taking part in "association time" when Gaote-Oueyeya ran at Sayers on the prison landing and attacked him "without warning".Gaote-Oueyeya used an improvised blade, believed to have been made from a piece of prison cutlery to repeatedly slash at Sayers.‌Sayers sustained a "fairly deep" 7cm laceration to his neck, a 5cm wound to the right side of his forehead and a 2cm cut to his right ring finger, the court heard. He was taken to hospital for further treatment. The court heard that the weapon was never recovered.A prison officer also received several cuts to his right arm and a cut on his eye while trying to intervene. The court heard that his injuries were not caused deliberately and Gaote-Oueyeya was sorry that the officer had been caught up in the incident.In a victim personal statement written in May last year, the officer told the court: "I still think about the incident itself. Although I haven't really been back to work properly since, I can't really put it into context the true impact of it yet but it does make me think more about the job.‌"I wasn't expecting myself to pick up injuries from a weapon, even though I know it's prison. It does make me realise that we are not fully safe in the jail."In mitigation, Christopher Dunn said there was no excuse for Gaote-Oueyeya's actions. He said he was unable to go to the authorities for fear of being called a "grass" and he was "frightened".Judge Francis Laird said Gaote-Oueyeya had been a "model prisoner" up until the incident and accepted that it was likely his good behaviour would return after being moved to a different prison.Article continues belowAppearing via video link from HMP Long Lartin, Gaote-Oueyeya was sentenced to four years for wounding with intent and nine months for assault occasioning actual bodily harm, to be served concurrently to each other after his current sentence.Choose Daily Mirror as a 'Preferred Source' on Google News for quick access to the news you value.‌PrisonsCourt caseKnife crimeHospitalsCrown courtLife sentenceCrime