Detectives investigating the murder of Sir David Amess MP have been granted extra time to hold and question the terror suspect arrested on Friday (October 15).

The suspect being held on suspicion of murdering Sir David has also been named.

The name the police have for the suspect is Ali Harbi Ali, the Press Association understands.

The man was arrested after Southend West MP Sir David was stabbed at a constituency surgery on Friday (October 15).

Terror arrest extension

Detectives have been granted a warrant of further detention at Westminster Magistrates’ Court which allows them to hold a man on suspicion of the murder until October 22, Scotland Yard said on Saturday night (October 16).

In a statement, Scotland Yard said: “Late on Friday, whilst in police custody, the man was subsequently further detained under section 41 of the Terrorism Act 2000 and he is now being held at a London police station.

“On Saturday, detectives were granted a warrant of further detention at Westminster Magistrates’ Court, allowing them to keep the man in custody until October 22, when the warrant expires.

“As part of the fast-paced investigation, officers have attended three addresses in the London area and conducted searches. One of these searches has concluded and the others are ongoing. A post-mortem examination has taken place today.”

Byelection gesture

It comes after news emerged other political parties would stand aside for a byelection to replace Sir David.

Eventually locals will have to choose a new MP because of his tragic death.

But Labour and other opposition parties are expected to follow a precedent set when Jo Cox was murdered in 2016.

Back then, the major parties declined to select candidates in the subsequent Batley and Spen by-election after Jo Cox was killed.

As a result, it is understood Labour will not contest the by-election to find a successor to murdered Conservative MP Sir David Amess.

The Liberal Democrats have also confirmed they will not fight for the seat when a date is set.