Telefono Azzurro manages the 116 000 telephone number 24/7 which is there to report children who have gone missing.  116 000 is the agreed number operating across all European Countries to report missing people and coordinated by Missing Children Europe,

With just one call you could make a difference and save a life: yours or that of another person like you. Many  children who disappear  soon return home, often within a day, while others may never return home.

It can therefore be of great help that you provide a detail or report anything that may help the authorities if you have information about the whereabouts of a missing child. A missing child is any child whose whereabouts is not known by those who have responsibility for them. A missing child could have run away themselves or have been abducted, both are at risk of abuse because of the lack of care they are receiving.

Many children run away from family because they are suffering  abuse and violence, we have noticed a significant rise in children running away as a result of abuse.