A fourth man has been arrested for the arsons related to Prime Minister Sir Keir Starmer's property.

The 48-year-old was arrested at Stansted airport today, the Metropolitan Police have confirmed.

He was initially stopped by officers under schedule 7 of the Terrorism Act, 2000, before being arrested on suspicion of conspiracy to commit arson with intent to endanger life.

The arrest is connected to an investigation into a series of fires and suspected arson attacks across North London last month. They included: vehicle fire in NW5 on Thursday, 8 May; a fire at the entrance of a property in N7 on Sunday, 11 May; and a fire at a residential address in NW5 in the early hours of Monday, 12 May.

The man has now been taken to a London police station, where he currently remains in police custody.

The Crown Prosecution Service previously authorised charged against three other men:

• Roman Lavrynovych, 21, of Sydenham, a Ukrainian national was charged with three counts of arson with intent to endanger life.
• Stanislav Carpiuc, 26, of Romford, a Romanian national, was charged with conspiracy to commit arson with intent to endanger life.
• Petro Pochynok, 34, of north London, a Ukrainian national was charged with conspiracy to commit arson with intent to endanger life.

The three men have been remanded in custody to next appear at the Old Bailey on Friday, 6 June.

The investigation is being led by officers from the Met’s Counter Terrorism Command due to the fires all having connections to a high-profile public figure. Anyone with information that could assist the investigation should call police on 101 quoting CAD 441/12 May. Enquiries remain ongoing.