Police have been granted a further 36 hours to question a 21-year-old man who was arrested in connection with arson attacks on properties linked to Sir Keir Starmer.
The Metropolitan Police arrested the man at an address in Sydenham, south-east London, on Tuesday on suspicion of arson with intent to endanger life.
He was taken to a London police station, where he currently remains in police custody.
A warrant of further detention was granted at Westminster Magistrates' Court on Wednesday, meaning he can be questioned until Friday morning.
Sir Keir Starmer told Parliament on Wednesday the attacks were “an attack on all of us,” democracy and British values.
At Prime Minister’s Questions, Tory leader Kemi Badenoch started her remarks by saying how “horrified” she was about the “completely unacceptable” alleged incidents.
“I think I speak for the whole house when I say that this wasn’t just an attack on him, but on all of us and on our democracy,” she added.
Sir Keir thanked the Conservative leader for swiftly giving him her support before stressing that the alleged attacks were “an attack on all of us, on democracy and the values that we stand for”.
Police are continuing their investigation into the attacks on properties and a car linked to Sir Keir as a 21-year-old suspect remained in custody.
Counter-terrorism officers are working “at pace” to establish the cause of the fires and “any potential motivation”, Scotland Yard said.
In the early hours of Monday, the emergency services responded to a fire at the Kentish Town home, North London, where Sir Keir lived before becoming Prime Minister and moving into 10 Downing Street.
The property is understood to have been rented out to his sister-in-law since the Labour leader’s election success last year.
Counter-terrorism officers are leading the investigation into the fire on Monday “as a precaution and due to the property having previous connections with a high-profile public figure”, the Metropolitan Police said.
A fire at a property on Sunday and a car, also linked to Sir Keir, which was set alight on May 8 also form part of the probe.
Commander Dominic Murphy, head of the Met’s counter-terrorism command, acknowledged the probe may cause concern to MPs.
“I would encourage any MP who is concerned about their own safety to get in touch with their dedicated local Operation Bridger officer, who can provide further advice and support,” he said in a statement on Tuesday.
On Monday, a police cordon and officers, as well as investigators from London Fire Brigade (LFB), could be seen outside the Kentish Town property where the Prime Minister used to live.
The Met said residents could expect an increased police presence in the coming days.
Neighbours described hearing a loud bang and said police officers were looking for a projectile.
Charles Grant, 66, told said: “Police searched my garden and said they were looking for something somebody had thrown but they didn’t find anything. They said they were looking for a projectile.”
Police were alerted by the LFB to reports of a fire at the residential address at 1.35am.
Damage was caused to the property’s entrance but nobody was hurt.
In the early hours of Sunday, firefighters dealt with a small fire at the front door of a house converted into flats in nearby Islington, which is also linked to Sir Keir.
One person was assisted to safety via an internal staircase by crews wearing breathing apparatus, LFB said.
The car fire broke out in the early hours of Thursday May 8, in the same street as the Kentish Town property.
Downing Street said the Prime Minister was “focused on the job at hand” as the investigation continues.
