A 21-YEAR-OLD man was arrested today by police investigating suspected arson attacks on properties and a car linked to Prime Minister Sir Keir Starmer.

The Metropolitan Police said the suspect was arrested in the early hours on suspicion of arson with intent to endanger life.

In the early hours of Monday, the emergency services responded to a fire at the Kentish Town home 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 last year’s election.

Counter-terrorism officers are leading the investigation into the fire “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 car, also linked to Sir Keir, which was set alight on May 8 form part of the probe.

Downing Street said the police should be given the “time and space” to complete their investigations.

The Prime Minister’s official spokesman said the security of MPs was taken seriously but stressed that Sir Keir was carrying on with his work.

The spokesman said: “He’ll be updated in the usual way, you’ll have seen the Met’s statement.

“But the Prime Minister has chaired Cabinet this morning, he is focused on the job at hand, focused on delivering the government’s agenda.”

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.

Neighbours described hearing a loud bang and said police officers were looking for a projectile.