In pictures: Aftermath of the Manchester Arena 'terror attack'

Armed police work at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at an Ariana Grande concert in northern England, police said. A representative said the singer was not injured. (Peter Byrne/PA via AP)

Police escort members of the public from the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Christopher Furlong/Getty Images)

Emergency services arrive close to the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Dave Thompson/Getty Images)

Emergency services work at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at an Ariana Grande concert in northern England, police said. A representative said the singer was not injured. (Peter Byrne/PA via AP)

Police escort members of the public from the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Christopher Furlong/Getty Images)

Members of the public are escorted from the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Dave Thompson/Getty Images)

British police guard the entrance to the Manchester Arena stadium in Manchester, United Kingdom on May 23, 2017. A large explosion was reported earlier in the evening and British police confirmed that at least 19 killed and many other wounded at American singer Ariana Grande concert at Manchester Arena. UK officials treating Manchester Arena explosion as possible terrorist incident. (Lindsey Parnaby/Anadolu Agency/Getty Images)

Armed police respond after reports of an explosion at Manchester Arena during an Ariana Grande concert in Manchester, England, Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at the concert in northern England, police said. A representative said the singer was not injured. (Peter Byrne/PA via AP)

Armed police stand guard at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Police says there are “a number of fatalities” after reports of an explosion at an Ariana Grande concert in northern England. (Peter Byrne/PA via AP)

An ambulance drives away from the Manchester Arena, where U.S. singer Ariana Grande had been performing, in Manchester, northern England, Britain, May 23, 2017. (Andrew Yates/Reuters)

Police and fans close to the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Dave Thompson/Getty Images)

Armed police officers stand next to a police cordon outside the Manchester Arena, where U.S. singer Ariana Grande had been performing, in Manchester, northern England, Britain, May 23, 2017. (Andrew Yates/Reuters)

Emergency services personnel speak to people outside Manchester Arena after reports of an explosion at the venue during an Ariana Grande concert in Manchester, England, Monday, May 22, 2017. Several people have died following an explosion Monday night at an Ariana Grande concert in northern England, police and witnesses said. The singer was not injured, according to a representative. (Peter Byrne/PA via AP)

Members of the public are escorted from the Manchester Arena on May 23, 2017 in Manchester, England. There have been reports of explosions at Manchester Arena where Ariana Grande had performed this evening. Greater Manchester Police have have confirmed there are fatalities and warned people to stay away from the area. (Dave Thompson/Getty Images)

Emergency services work at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England, Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at an Ariana Grande concert in northern England, police said. A representative said the singer was not injured. (Peter Byrne/PA via AP)

A police officer talks to locals outside the Manchester Arena, where U.S. singer Ariana Grande had been performing, in Manchester, northern England, Britain May 22, 2017. (Jon Super/Reuters)

A police vehicle is seen outside the Manchester Arena, where U.S. singer Ariana Grande had been performing in Manchester, northern England, Britain May 23, 2017. (Andrew Yates/Reuters)

Concert goers react after fleeing the Manchester Arena in northern England where U.S. singer Ariana Grande had been performing in Manchester, Britain, May 22, 2017. (Jon Super/Reuters)

A police van and an ambulance are seen outside the Manchester Arena, where U.S. singer Ariana Grande had been performing, in Manchester, northern England, Britain May 22, 2017. (Jon Super/Reuters)

Ariana has been left heartbroken by the attack.