[7][8] During the struggle, De Zoysa fired a fourth and final shot, striking himself in the neck, causing brain damage.

[12] The weapon was an Colt .41 Model 1895 'Navy' double action revolver, which De Zoysa had holstered under his armpit.

[14] Louis De Zoysa,[15] aged 23, was arrested on 13 November 2020 on suspicion of murdering a police officer, when he was considered well enough though still requiring hospital treatment after himself being wounded by one of the bullets fired during the shooting.

[16] On 28 April 2023, Louis De Zoysa pleaded not guilty to the murder whilst appearing via video link from hospital at Northampton Crown Court.

[18] Following his trial at Northampton Crown Court, De Zoysa was convicted of murder on 23 June 2023.