British police said on Tuesday they had arrested a 21-year-old man on suspicion of arson after counter-terrorism officers launched an investigation into three fires, including one at Prime Minister Keir Starmer’s private home.

Police were called to reports of a fire in the early hours of Monday morning at the property in Kentish Town in north London, the area that Starmer represents in parliament.

Nobody was injured but damage was caused to the property’s entrance, police said.

The man was arrested in the early hours of Tuesday on suspicion of arson with intent to endanger life in connection with the fire and two further incidents, police said. He remains in custody, they added.

Police are investigating whether a fire at the entrance of a property in nearby Islington on Sunday and a vehicle fire in Kentish Town on Thursday are linked to the incident on Monday.

A BBC report said the Islington property was also connected to the prime minister.

Starmer lived in the terraced house on a back street with his wife and two children before he moved into Number 10 Downing Street when he became prime minister last July.

Officers from London’s Metropolitan Police Counter Terrorism Command were leading the investigation due to the property’s connections with a high-profile public figure, police said.

His spokesperson thanked the emergency services for their work on Monday.

Kim Kardashian is set to testify Tuesday in the Paris trial of the burglars accused of tying up and robbing the billionaire reality TV star at gunpoint nearly nine years ago.

She is expected to detail her ordeal during the 2016 Paris Fashion Week burglary, where she was robbed of nearly $10 million in cash and jewellery, including a $4 million engagement ring that was never recovered.

It will be the first time Kardashian will face the alleged robbers in court.

The defendants – who consist of nine men and one woman whose ages range from their 30s to their 70s – are facing charges including armed robbery, kidnapping and conspiracy. Eight of them deny involvement, while two have admitted to lesser offenses.

Several are repeat offenders, with much of the beginning of the trial focused on their past criminal careers.

The trial opened on April 28 at a packed courthouse in the French capital.

The bodyguard, named only as Pascal D., said he found Kardashian “crying hysterically” on his arrival.

Dubbed the “Grandpa Robbers,” of the original 12 suspects, one has since died, and another defendant who has Alzheimer’s disease has been ruled unfit to stand trial. If convicted, some of the remaining defendants could face up to 30 years in prison.

The trial has been delayed for years partly because of major cases like those related to the 2015 Paris terrorist attacks.

The trial is scheduled to run through May 22, with a verdict expected on May 23.