A missing person is a person who has disappeared and whose status as alive or dead cannot be confirmed as their location and condition are unknown. A person may go missing through a voluntary disappearance, or else due to an accident, crime, death in a location where they cannot be found (such as at sea), or many other reasons. In most parts of the world, a missing person will usually be found quickly. While criminal abductions are some of the most widely reported missing person cases, these account for only 2–5% of missing children in Europe. By contrast, some missing person cases remain unresolved for many years. Laws related to these cases are often complex since, in many jurisdictions, relatives and third parties may not deal with a person's assets until their death is considered proven by law and a formal death certificate issued. The situation, uncertainties, and lack of closure or a funeral resulting when a person goes missing may be extremely painful with long-lasting effects on family and friends. A number of organizations seek to connect, share best practices, and disseminate information and images of missing children to improve the effectiveness of missing children investigations, including the International Commission on Missing Persons, the International Centre for Missing & Exploited Children (ICMEC), as well as national organizations, including the National Center for Missing & Exploited Children in the US, Missing People in the UK, Child Focus in Belgium, and The Smile of the Child in Greece. Reasons People disappear for many reasons. Some individuals choose to disappear, for others disappearance is inadvertent (e.g. getting lost) or it is imposed on them (abduction/imprisonment). Reasons for disappearance may include: To escape domestic abuse. Leaving home to live in an unknown place under a new identity. Becoming the victim of kidnapping. Child abduction by a non-custodial parent or other relative. Seizure by the federal authorities (Military, law enforcement, government) and imprisoned / detained indefinitely / tortured fatally / non fatally for an unknown period of time in an undisclosed guarded location without due process of law (see forced disappearance). Suicide in a remote location or under an assumed name (generally to spare their families the suicide at home or to allow their deaths to be eventually declared in absentia). Victim of murder (body disguised, destroyed, or hidden). Mental illness or other ailments such as Alzheimer's disease can cause people to forget where