SIR Keir Starmer today branded the torching of his home as an “attack on democracy”.

Breaking his silence on the alleged arson incident for the first time, the PM slammed an assault on “the values that we stand for”.

In the Commons for PMQs, Sir Keir said: “This is an attack on all of us, democracy and the values that we stand for.”

It came after Tory Leader Kemi Badenoch opened her weekly head-to-head with the PM by condemning the devestating incident.

She said: “Before we start, Mr. Speaker, I would like to say to the Prime Minister how horrified I was to hear about the attack on his family home.

“It is completely unacceptable, and I think I speak for the whole house when I say that this wasn’t just an attack on him, but on all of us and on our democracy.”

It comes as the car torched in the alleged arson attacks was “sold to neighbours” after belonging to the PM.

A separate attack to the house “firebombing” incident involved a 4×4 which was parked on the same street at Sir Keir’s family home.

It’s now revealed that the car had been sold to the PM’s neighbours before the attack, according to the Standard.

Both attacks are thought to be linked.

A 21-year-old man was arrested in connection with the alleged arson attacks involving two homes and a car on Tuesday night.

The unnamed man was questioned by detectives from Scotland Yard’s counter terrorism unit about fires at two properties linked to the Prime Minister, as well as a car blaze also linked to Starmer. 

The suspect‘s nationality has also not been disclosed, but cops confirmed he was detained in the early hours of Tuesday morning. 

He was arrested at an address in Sydenham, South East London, which is 12 miles from the scene of the suspected “firebomb” attacks.

While the cops search for answers, the head of the Counter Terrorism Command has issued a rare statement. 

Commander Dominic Murphy said: “We are working at pace and continue to explore various lines of enquiry to establish the cause of the fires, and any potential motivation for these.

“A key line of enquiry is whether the fires are linked, due to the two premises and the vehicle all having previous links to the same high-profile public figure.

“We recognise that this investigation may cause concern to other public figures, particularly MPs.

“The protection of MPs is something we take extremely seriously across the whole of policing and I would encourage any MP who is concerned about their own safety to get in touch with their dedicated local Operation Bridger officer, who can provide further advice and support.”