The status of one of the other assailants, Youssef Zaghba, 22, as a potential militant was passed on to the British and Moroccan secret services, according to Italian media reports. She said she tried to keep him away from radical friends, but "he had the internet and from there he got everything".
Khan told British TV station Channel 4 on Monday evening: "I don't think we should roll out the red carpet to the president of the United States of America in the circumstances where his policies go against everything we stand for".
Meanwhile, more than 130 imams and Muslim religious leaders have refused to say funeral prayers for the perpetrators.
Three knife-wielding attackers on Saturday had unleashed a terror rampage here, ploughing a van into pedestrians on the iconic London Bridge before stabbing revellers in a nearby market, killing seven people.
Butt, who was 27 as well and had been born in Pakistan, is understood to have been the attacker who was seen wearing an Arsenal football shirt at the time of the attack. Authorities suspect Butt was radicalized in the United Kingdom and not in Pakistan, the newspapers said.
An official at the Bologna chief prosecutor's office said Zaghba was stopped at the city's airport after arriving on a flight from London 2016. He used two different birthdates that would make him either 25 or 30, authorities said.
"A small number of the highest priority investigations involve current attack planning, and these investigations command a significant proportion of our resource", police said.
Mr Johnson told BBC Breakfast: "All that argument detracts from the responsibility of those scumbags and what they have done". Redouane had not aroused any suspicions.
Valeria Collina was quoted by Italian weekly news magazine L'Espresso as saying she last spoke to her son Thursday and now realizes it was a goodbye call. "You should not even look at anything a little bit unusual on the internet, you should see the right people and do the right things and it seemed like he was doing it", according to audio of her group interview provided by the ANSA news agency. One projection said she would win a majority of 64 seats. But she put much of the blame for her son's radicalization on Islamic propaganda found on the internet.
And his extremist views had reportedly prompted numerous people to go to the authorities.
Before the recent attacks, Brexit and domestic issues such as the state of the health service and the cost of care for the elderly had dominated the election campaign. He did not identify the victim, but British police said the next of kin of 45-year-old Xavier Thomas were informed. Addressing the attackers, he said: "We will defeat you".
At present, it is still engaged in investigations into the Manchester bombing as well as the London attacks.
But an announcement - made before the Manchester and London Bridge attacks - that they planned to make some of the elderly pay more for their care saw that lead start to shrink, to between one and 12 points now. Her family said she had died in her fiancé's arms after being struck by the attackers' speeding van. His cousin, 18-year-old Bilal Dar, told The Associated Press that Butt's uncle was taken in for questioning.
Hedge had moved to London past year.
His sister Isabel wrote on Facebook Wednesday: "My brother Ignacio tried to stop some terrorists and lost his life trying to save others".
In a tragic twist, Miss McMullan told the Telegraph that it had been her brother's first night out for months, as he celebrated the completion of business project to which he had dedicated every waking hour for two years.
Two men are now in custody on suspicion of violating the Terrorism Act.
The three suspects in the attack have been identified.
He was one of about 3,000 suspects who were known to British authorities but not part of 500 active investigations.