A 25-year-old man has denied the murder of Met Police sergeant Matthew Ratana, who was shot dead inside Croydon police station in 2020.
Louis De Zoysa, from Banstead, Surrey, held up a whiteboard with not guilty written on it to enter his plea via a video-link to a hospital, and will now face trial on June 6.
Sgt Ratana, 54, died after suffering a fatal wound to the chest at Croydon custody centre in south London on September 25 2020.
Prosecutors allege sergeant Ratana was shot while De Zoysa was handcuffed, during an incident in which he also sustained a gunshot wound.
De Zoysa was remanded in custody until his trial, which is expected to last for around three weeks.