a man who shot dead a police sergeant while handcuffed in custody has been told he ll spend the rest of his life in prison. 54 year old sergeant matt ratana, was shot in the chest and leg at croydon custody centre by louis de zoysa, who had smuggled an antique gun into the building following his arrest in september 2020. he had claimed diminished responsibility, but the judge said he d acted in cold blood . our home affairs correspondent, daniel sandford, is outside the court in northampton. yes, louis de zoysa shot matiu ratana in a police cell while handcuffed. he hit matiu ratana in the heart and then shot himself in the heart and then shot himself in the neck, causing permanent brain injuries. he is now in a wheelchair and struggles to talk. he sat impassively as matiu ratana s partner described the tormenting grief she feels and the loneliness.