The King visited Southport yesterday to meet those affected by the 29 July knife attack and the violent disorder that followed.
At Southport Town Hall, he signed a book of condolence and met privately with some of the children and their families affected by the stabbings.
Three young girls, Bebe King, Elsie Dot Stancombe, and Alice da Silva Aguiar, were killed in the attack, which took place during a Taylor Swift-themed dance session in the Merseyside town.
Ten others were seriously injured.
King Charles also met local people and the emergency services, and spoke to groups affected by the violent disorder that followed the attack, including faith leaders.
Sefton Council leader Marion Atkinson said: ‘Southport is still grieving and as a town needs time to heal and that will take some considerable time.
‘But from what I saw from the crowds outside the town hall, they were all hugely appreciative of being visited by the King.’