A 34 year old man is the latest suspect arrested over three fires at properties linked to the Prime Minister

A third man has been arrested in connection with a series of alleged arson attacks targeting homes associated with Prime Minister Sir Keir Starmer, the Metropolitan Police has confirmed.

The 34-year-old suspect was detained in Chelsea, south-west London, on Monday morning on suspicion of conspiracy to commit arson with intent to endanger life. His arrest marks the latest development in a growing investigation being led by the Met’s Counter Terrorism Command due to the political prominence of the targeted individual.

Three separate incidents are under investigation. The first occurred on 8 May, when a vehicle previously owned by Sir Keir and later sold to a neighbour burst into flames on a residential street in Kentish Town. Days later, in the early hours of 12 May, emergency services were called to a fire at the entrance of a property on the same street, which Starmer reportedly still owns and rents out. Then, on 11 May, a third blaze was reported at the front door of a converted house in Islington where the Prime Minister had once lived.

All three fires caused damage but no injuries. Authorities have not confirmed whether the incidents were directly politically motivated, though the targeting of addresses with personal ties to the Prime Minister has raised serious concerns about the safety of public figures.

On Saturday, police arrested a 26-year-old man at Luton Airport in connection with the same alleged offences. He remains in custody after officers were granted additional time to question him. His name has not been released.

Meanwhile, 21-year-old Roman Lavrynovych has already been charged with three counts of arson with intent to endanger life. The Ukrainian national, understood to work as a builder and roofer, was arrested earlier and appeared in court last Friday. He entered no pleas during the hearing but denied the allegations in police interviews.

Lavrynovych has been remanded in custody until his next appearance at the Old Bailey on 6 June. He is yet to publicly comment on the case, and his legal team has not issued any statements.

While investigators have not publicly outlined a motive, the Metropolitan Police’s Counter Terrorism Command is treating the attacks with the highest seriousness due to their proximity to the country’s leader and the potential threat to life.

Sir Keir Starmer has refrained from making detailed public statements on the case, citing the ongoing investigation. However, his official spokesman issued a brief note of thanks on 12 May, praising emergency services for their swift responses.

“This is clearly a disturbing series of incidents,” one Westminster source said. “Security arrangements for ministers and former homes are always reviewed in light of these kinds of developments.”

The attacks have sparked debate over the vulnerabilities of high-profile politicians, particularly after moving from public to private residences. Although the Prime Minister now resides at Downing Street, all three addresses targeted were personally associated with him prior to assuming office.

The Metropolitan Police continue to appeal for information and have assured the public that there is no ongoing threat to the wider community. They have not ruled out further arrests.

The investigation remains active, with detectives reviewing CCTV footage, forensic evidence, and phone data.