Police have identified all the London attackers and that 11 people remain in custody for possible connections to the attack, Prime Minister Theresa May said on Monday.
At least 12 people were arrested on Sunday – including five men and seven women ranging in age from 19 to 60 – in the investigation into a van and knife attack in the heart of London that left seven people dead.
One person has been released without charge.
Police raids continued on Monday, as British counterterrorism investigators searched two homes and detained “a number” of people.
Dozens of people were injured, many of them critically, in the attack that started on the London Bridge, when three attackers swerved the vehicle into pedestrians then, armed with knives, rampaged through Borough Market, slashing and stabbing anyone they could find.
The three men, who wore fake suicide vests, were shot to death by police. ISIS has claimed responsibility.
Metropolitan Police Commissioner Cressida Dick said she wouldn’t release further details in what she described as a fast-moving investigation, including whether authorities were familiar with the men before the attack.
ISIS has claimed responsibility for three attacks in Britain since March, and Dick described the recent wave of violence as “unprecedented in my working life.”
“We in this country have faced a terrorist threat throughout my life – it changed and morphed and we will change and adapt to what appears to be a new reality for us,” she said.
May said Monday the police and counter-terrorism operations are adequately funded and staffed and that the official threat level is to remain at “severe,” meaning an attack in highly likely.
Earlier, May warned that the country faced a new threat from copycat attacks.
The country’s major political parties temporarily suspended campaigning with only days to go before the general election. May said the vote would take place as scheduled Thursday because “violence can never be allowed to disrupt the democratic process.”
Most of the London Underground stations reopened Monday in the neighbourhood where the attack took place, allowing life to resume after more than 24 hours of lockdown.
