Police Scotland have issued a statement following the Manchester attack.
Police say 22 people were killed after a suicide attacker detonated a device during a performance by Ariana Grande.
Among those missing are two teenagers from the Isle of Barra.
In the statement, Chief Constable Phil Gormley said: “My thoughts and those of everyone at Police Scotland are with those who have lost loved ones or who were injured in the attack in Manchester.
“As part of the UK-wide response to these events, Police Scotland continues to review all safety and security plans and operations.
“This includes ensuring our armed policing and specialist resources are appropriately deployed.
“People will therefore see armed police on patrol at transport hubs and crowded places. There is no intelligence to suggest there is any threat to Scotland but I would ask the public to remain alert and report anything suspicious.
“We continue to liaise with the UK authorities in response to this incident.”
Greater Manchester Police have issued an emergency number for those who are concerned about loved ones or anyone who may have been in the area: 0161 856 9400.