What does missing mean?
When you hear people talking about someone going missing this is what the police mean:
The Association of Chief Police Officers (ACPO) defines a missing person as:
anyone whose whereabouts is unknown whatever the circumstances of disappearance. They will be considered missing until located and their well-being or otherwise established”. (ACPO, 2005: 8).
That really means that if the Police don’t know where someone is then they will be known as missing until they know for certain what has happened.