Moustapha Dia, already in prison for a 2018 murder, was sentenced to four more years for attacking a prison officer with a plastic knife in 2024.

Moustapha Dia, 28, serving a life sentence for murdering his sister-in-law in 2018, was sentenced to four additional years in prison on March 12, 2026, after being convicted of attacking a prison officer at HMP Whitemoor in October 2024. The assault, which occurred around 2 p.m. when Dia approached the officer during routine duties, involved a headlock and multiple stab wounds to the head, face, and neck with a plastic knife. The officer, hospitalized with a concussion and superficial injuries, suffered psychological trauma. Dia denied the charges, but a January trial at Huntingdon Law Courts found him guilty of possessing an offensive weapon and wounding with intent. Authorities described the attack as ferocious and cowardly, emphasizing the danger faced by prison staff.