Here's what we know about the victims of the Manchester bombing

This undated photo obtained by the Press Association on Tuesday, May 23, 2017, of Saffie Roussos, one of the victims of an attack at Manchester Arena, in Manchester, England, which left more than a dozen dead on Monday. A suicide bomber blew himself up as concert-goers left a show by the American singer Ariana Grande. (PA via AP)

This undated photo obtained by the Press Association on Tuesday, May 23, 2017, of Saffie Roussos, one of the victims of an attack at Manchester Arena, in Manchester, England, which left more than a dozen dead on Monday. A suicide bomber blew himself up as concert-goers left a show by the American singer Ariana Grande. (PA via AP)