Mohammed Shafiq, chief executive of the Ramadhan Foundation, claimed that the Muslim community has been doing enough to report extremists.
Speaking to Sky News, Mr Shafiq claimed that the Government needed to do more following the London attack in which terrorists killed seven people and injured 48 on London Bridge and in Borough Market on Saturday night.
He said: “It’s the Prime Minister who stands on the steps of Downing Street last Sunday and said that the Muslim community has been far too tolerant of extremism.
“I would actually argue that the Government and those in authority have been too tolerant of extremists.
Mohammed Shafiq said the Government need to do more to stop extremism
“The sooner we lock these people up, the sooner we take immediate action against those who are glorifying terrorism and the safer our country will be.”
The Ramadhan Foundation leader reiterated how well the Muslim community is doing in reporting extremists.
He added: “The mosques are doing great jobs. If you look at where we were 10 to 12 years ago, we had extremist preachers in some mosques. You don’t have that anymore.
“The radicalisation is happening online so there is a responsibility for social media.
I would actually argue that the Government and those in authority have been too tolerant of extremists
“But yeah, we as Muslim’s have to confront this. Why? Because they distort our faith.”
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Speaking this morning on BBC Radio 4’s Today programme, Mr Shafiq said terrorist sympathisers should not be left to “roam our streets”.
“If you glorify terrorism, if you glorify the barbaric crimes which ISIS have been involved in then the law should take its course and you should be held accountable,” he said.
Speaking following the London Bridge terror attack, the Met commissioner admitted the scale of potential terrorists was huge.
Sadiq Khan leads sombre vigil for London terror victims Tue, June 6, 2017
London Mayor Sadiq Khan lead a vigil to commemorate the victims of the London Bridge terror attack. Hundreds attended the event outside London's City Hall
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London Mayor Sadiq Khan bows his head
Cressida Dick said: “I would just remind people that we do have literally thousands, in fact, tens of thousands of people who we would regard as subjects of interest.
“Actually when we have fantastic powers of intelligence operations we will know something about a lot of people.”
Speaking in front of hundreds of mourners who turned out for the vigil for the victims of the London Bridge attack on Monday, the London Mayor said the terrorists “will not win”.
“As a proud and patriotic British Muslim your perverse ideology has nothing to do with the true values of Islam and you will never divide our city,” he said.