Mayor of Manchester Andy Burnham has said the "spirit of Manchester" will hold the city together as he condemned the Manchester Arena blast as an "evil act".
Mr Burnham paid tribute to "the people of Manchester", saying: "Even in the minutes after the attack, they opened their doors to strangers and drove them away from danger.
"They gave the best possible immediate response to those who seek to divide us and it will be that spirit of Manchester that will prevail and hold us together."
He also thanked the hundreds of police and ambulance staff who "worked through the night in the most difficult circumstances imaginable".
Offering to support the victims and their families, Mr Burnham added: "It is hard to believe what has happened here. These were children, young people and their families that those responsible chose to terrorise and kill."
New CCTV of the Manchester bomber Salman Abedi has been released by police.
The younger brother of the Manchester bomber has said Salman Abedi was radicalised online in Britain.