The attack, claimed by Isis, happened at 10.30pm after a concert by singer Ariana Grande. It targeted children, teenagers and adults alike.
The suicide bomber, identified as Salman Abedi, set off an improvised explosive device made of nails and bolts as concertgoers left the arena.
His first victim to be named was Georgina Callander, 18. The second was 8-year-old Saffie Rose Roussos.
But even as the city struggles with its grief, people are coming together in love and support.
The Sikh community formed a parade and marched to St Ann's Square to pay their respects. They offered their support, financially and otherwise and opened their temples to those affected.
Thousands joined a vigil in Manchester's Albert Square to commemorate those who lost their lives.
In grief the Manchester and Britain are united.