A man has been arrested in connection with the investigation into the murder of a Metropolitan Police sergeant, as tributes were paid to the “extraordinary” officer.

Sergeant Matt Ratana was shot by a handcuffed suspect in the early hours of Friday at a custody suite in Croydon.

A man was arrested in the early hours of Sunday in Norwich, Norfolk, on suspicion of supplying a firearm.

The suspect for the shooting has been named as Louis De Zoysa, 23, who remains in a critical condition in hospital. Police said they have not yet been able to speak to him.

Ratana, 54, was remembered on Sunday by friends and teammates at East Grinstead Rugby Club where he was head coach.

Met Commissioner Cressida Dick also paid tribute to him as an “extraordinary person” who was “very good at his job”.

Leading tributes to fallen officers on National Police Memorial Day (NPMD), which was held remotely due to the pandemic, Prince Charles said the officer’s murder is the “latest heartbreaking evidence” of the daily risks officers face.

Addressing the annual service in a video message, he said: “The dreadful incident in Croydon on Friday is the latest heartbreaking evidence of the risks faced by our officers daily.

“I would like to send my deepest sympathy to the families of each of these officers who have given their lives.

“These are losses we can never replace, sacrifices we can never repay, but of which, as a society, we can only strive to be worthy.”