A Reform MP has slammed a government assessment into Elon Musk's posts as "pathetic" amid concerns about the danger they pose to UK security.

The Home Office has ramped up extra monitoring to assess the content and reach of what is being shared X, especially posts from accounts with a large number of followers - including Mr Musk's.

The tech billionaire has brutally attacked Sir online, claiming the Prime Minister failed to bring "rape gangs" to justice as director of public prosecutions (DPP) from 2008-13.

The entrepreneur also called him "complicit in the rape of Britain" and accused safeguarding minister Jess Phillips of being a "rape genocide apologist" after the Government decided against a Whitehall-led inquiry into child sexual abuse in Oldham.

A government source said: "We keep a close eye on how disinformation and hate can proliferate, including online."

Great Yarmouth MP Rupert Lowe has now asked the Home Office for the cost of the probe to taxpayers by the counter-extremism unit.

He said: "I have asked the Home Office how many of Musk's posts have been investigated, for what reason, by how many officers and at what cost to the taxpayer. They will spy on Musk's online activity, but no inquiry into thousands of foreign rapists. Pathetic."

The counter-terrorism unit has been involved in content analysis and wider risk assessment.

The unit sits within the Homeland Security Group, whose "mission is to reduce national security risks to the UK's people, prosperity and freedoms".

According to the official government website, it "focuses on the highest harm risks to the homeland, whether from terrorists, state actors, or cyber and economic criminals".

Ms Phillips told how she has faced a "deluge of hate" after Mr Musk's posts.

The Labour MP said there had been an "attempt" to bully her.

Earlier this week, the Prime Minister hit out at Conservative leader Kemi Badenoch over "lies and misinformation, and slinging of mud", saying it did not help victims of child sexual abuse.

The Conservatives accused Labour MPs of having "turned a blind eye to justice" for victims of grooming gangs after an amendment to the child safety and education Bill, which would have forced a national inquiry, was rejected in the House of Commons on Wednesday.