Police in London have now named the three men responsible for Saturday’s terror attack, which left seven people dead and dozens more injured.

One of the attackers, Khuram Shazad Butt, was on authorities' radar and even appeared in a 2016 television documentary called "The Jihadis Next Door."

At one point in the documentary Butt was seen among a group of British jihadis praying with a black Islamist flag in London's Regent's Park.

The Metropolitan Police said: "Khuram Shazad Butt was known to the police and MI5. However, there was no intelligence to suggest that this attack was being planned and the investigation had been prioritised accordingly. The other named man, Rachid Redouane, was not known."

Former Islamic extremist Maajid Nawaz said on "Fox & Friends" this morning that many Europeans have become "accustomed" to radical Islamic extremists living among them. 

"When even they appear in documentaries, telling us that they are extremists, telling us that they will not condemn ISIS, because we've become so accustomed to living among them, we don't pay any heed to it," Nawaz said. "And this is the result, what we see happen on London Bridge."

He said that British Prime Minister Theresa May was right to emphasize the threat of radical Islamic terrorism in the wake of the attack, but she has to show that it's not just talk.

He suggested that they create a new role in the government for a "counterterrorism coordinator" who can work with multiple departments, similar to the Homeland Security secretary in the U.S.

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