He said many people were "very anxious that she was at the Home Office for all this time, presided over these cuts in police numbers, and now is saying that we have a problem".
The Islamic State group has claimed responsibility for Saturday night's brazen attack that started on London Bridge, then continued in the streets surrounding Borough Market.
There has been widespread praise of the quick response on Saturday from armed police, who killed the three attackers with 50 shots within eight minutes of the alarm being raised.
Butt and his two accomplices drove a hired van into pedestrians on London Bridge before stabbing people in the area around Borough Market in an attack which began at 9.58pm BST.
British police revealed on Monday the identities of two of the three attackers behind the Saturday's London assault. We strongly condemn these actions.
He appeared in a Channel 4 documentary entitled "The Jihadis Next Door" about British extremists that was broadcast past year, local media reported.
The other member of the trio, Rachid Redouane, a 30-year-old who had claimed to be Moroccan and Libyan, was not known to intelligence services.
The police have since been raiding locations in East London and Essex detaining 12 people, mostly women.
Republican officials from 16 states back Trump in travel ban fight
The revised order removed language barring legal permanent residents and a clause that protected religious minorities. Most of the states had also backed Trump earlier in the litigation.
The admission that at least one of the London Bridge attackers was known to authorities has fuelled a security debate already underway in Britain as the country counts down to an unpredictable election on Thursday. He has been criticised for voting against counter-terrorism legislation and expressing reservations about police responding to attacks with "shoot-to-kill" tactics.
Boris Johnson, Britain's foreign secretary, said that the police and security services will have questions to answer about why Butt was not stopped.
Questions have been asked of police after it emerged Butt had starred in a Channel 4 documentary, The Jihadist Next Door. Last month, he was spotted urging people in east London not to participate in the June 8 general election.
One police officer is seen kicking the body of one of the dead attackers. "However, there was no intelligence to suggest that this attack was being planned", the Metropolitan Police said.
A supporter of Arsenal football club, whose shirt he was wearing during the attack, Butt was known to the police and MI5, which had opened an investigation into him in 2015, according to a report in The Guardian.
"Work is ongoing to understand more about them, their connections and whether they were assisted or supported by anyone else", Rowley said. Image copyright Family handout/Reuters Image caption James McMullan's family believe he was among those killed. Chrissy Archibald (right) had come to London to be with her fiance.
Macron, who didn't identify the victim, lamented the "heavy toll these attacks have taken on us", Agence France-Presse reported.
Comments