Sentence: Whole life imprisonment
Louis De Zoysa shot and killed Metropolitan Police Sergeant Matt Ratana in a holding cell at Croydon's Windmill Road custody centre on September 25, 2020. While handcuffed, he retrieved a concealed .41-calibre revolver and fired multiple shots, hitting Sgt Ratana in the chest and thigh, leading to his death. De Zoysa also sustained injuries from his own gunfire. He was arrested earlier that day in Norbury and had bullets and cannabis on his person.