LONDON — Police are investigating after a small fire broke out at Prime Minister Keir Starmer’s north London home in the early hours of Monday morning.

The London Fire Brigade was called at 1:11 a.m. and quickly brought the fire under control. Nobody was hurt, though the front door was damaged, a cordon remains in place on the street and police are at the scene.

A resident of the street said he heard a loud, one-off bang, that sounded like a “firebomb,” and possibly shattered glass.

Counterterror police are involved in the probe and the fire is being treated as suspicious.

While Starmer is based in Downing Street as prime minister, he still retains his north London residence.

A London Fire Brigade spokesperson said: “Firefighters were called to a small fire outside a property on Countess Road in Kentish Town this morning,” adding: “Two fire engines from Kentish Town Fire Station attended the scene.”

A Metropolitan Police statement said: “On Monday, 12 May at 1.35 a.m., police were alerted by the London Fire Brigade to reports of a fire at a residential address in Countess Road, NW5.”

Downing Street said the prime minister was grateful to the emergency services for their work but could not comment further due to the live investigation.

Matt Honeycombe-Foster and Emilio Casalicchio contributed to this report.