The aftermath of the Manchester attack

Police officers stand at the Miller Street and Corporation Street Crossroads, in front of the Manchester Arena on May 23, 2017 in Manchester, England © Dave Thompson/Getty Images

The aftermath of the Manchester attack

Police and fans close to the Manchester Arena on May 23, 2017 in Manchester, England. An explosion occurred at Manchester Arena as concert goers were leaving the venue after Ariana Grande had performed © Dave Thompson/Getty Images

The aftermath of the Manchester attack

Ariana Grande concert attendees leave the Park Inn where they were given refuge after last nights explosion at Manchester Arena on May 23, 2017 in Manchester, England © Christopher Furlong/Getty Images

The aftermath of the Manchester attack

Police and fans close to the Manchester Arena on May 23, 2017 in Manchester, England. An explosion occurred at Manchester Arena as concert goers were leaving the venue after Ariana Grande had performed © Dave Thompson/Getty Images

The aftermath of the Manchester attack

Andy Burnham, Mayor of the city of Manchester, UK

The aftermath of the Manchester attack

Ariana Grande concert attendees leave the Park Inn where they were given refuge after last nights explosion at Manchester Arena on May 23, 2017 in Manchester, England © Christopher Furlong/Getty Images

The aftermath of the Manchester attack

The first floral tributes to the victims of the terrorist attack are placed on the empty streets on Shudehill, May 23, 2017 in Manchester, England © Christopher Furlong/Getty Images

The aftermath of the Manchester attack

At 10 Downing Street, the seat of the UK government, Prime Minister Theresa May made a speech about the attack, confirming that 22 people have died and 59 have been injured, many of whom young people and children, and that the campaign ahead of the general election on the 8th of June has been suspended © Carl Court/Getty Images