Streatham terror attacker Sudesh Amman had previously claimed in a social media conversation that the Jews were doing “worse” to Muslims than had been done to them under the Nazis, it has been revealed.

After Amman was shot dead by police after grabbing a knife and attacking bystanders in south London on Sunday – the Crown Prosecution Service (CPS) released further detail of conversations the 20-year-old had engaged in on WhatsApp which led to his imprisonment in 2018.

In one conversation with family members, he said Muslims had been put into conditions which were worse than “concentration camps.” 

The CPS confirmed that in the same conversation, the Islamist extremist "expresses the belief that Jews are doing worse to Muslims and suggests that as Yazidi women are slaves the Quran makes it permissible to rape them".

A spokesperson for the Community Security Trust said: “This latest terrorist attack shows, yet again, how such things can happen in any public place.

"People need to consider how they themselves would react if caught up in such a situation: how they would get away, hide, or even fight back if they had to.”

Amman was jailed in December 2018 for possessing and disseminating recognised terrorism-related documents. He was sentenced to three years, four months but was released early at the end of last month.

On Monday, Prime Minister Boris Johnson said he had “come to the end of my patience” on the automatic early release of people convicted of terrorism offences and said he would “take action”.

He said the Government would look at how to “retrospectively” apply any changes to early release to existing prisoners serving their sentence, not just those convicted after any change.