Sgt Matt Ranana was fatally shot at Croydon Custody Centre on September 25 (Image: PA)
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A 23-year-old man has been charged with murdering a Met Police officer.
Louis de Zoysa will appear at Westminster Magistrates' Court tomorrow accused of killing Sergeant Matt Ratana.
He also faces charges of possession of a firearm and possession of ammunition.
de Zoysa has remained in hospital in a stable, non-life threatening condition, under police guard since Sgt Ratana's killing in September last year.
The suspect was hit by a bullet during a struggle when Sgt Ratana, 54, was fatally shot at a custody centre in Croydon, South Londonr.
In a statement the Met said: "Police have been in close liaison with his medical team and the Crown Prosecution Service (CPS) throughout."
The force said: "We have updated Matt’s partner and son on this significant development."
New Zealand-born dad Sgt Ratana was close to retirement and is thought to have been set to propose to his girlfriend Susan Bushby.
Met Commissioner Dame Cressida Dick described him as a "talented officer" who was "big in heart".
Ms Bushby said in a statement after the officer's death: “There aren’t really any words for how I am feeling right now about the loss of Matt; about losing someone I loved, and was so close to, in such a tragic manner."
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