A missing person is someone who has been reported as not being seen, either by family or friends or by law enforcement. The definition of a missing person is broad and varies between jurisdictions, but is usually defined as someone who has been reported to police as having gone somewhere they are not expected and may be in danger (see College of Policing Authorised Profession Practice).
People can go missing for a variety of reasons. It might be as simple as forgetting to be somewhere they are expected, a misunderstanding or lack of communication. It could be that they are running away from physical, sexual or emotional harm or financial difficulties, and there are also concerns that they are being lured away to be exploited. In some cases, the disappearance is caused by a criminal act and it is considered that they are abducted.
When a person is reported missing the police will carry out an investigation to locate them as quickly as possible. This will involve a wide range of responses, from a ‘hasty search’ that uses volunteers to check areas close by, to the use of helicopters and specialist search dogs. The search will be led by the information available and what is known about the disappearance.
It is recommended that families ask for a regular point of contact within the police in order to receive updates and share any relevant information. They can also request a Family Liaison Officer, who can help them to manage their feelings and cope with the situation.