Active euthanasia involves the deliberate ending of a person’s life through an intervention or action, which may be based on a clear statement of the person’s wishes or a decision made by someone else who has the legal authority to do so, example are the parents or spouse of the dying or suffering person. It is the deliberate ending of someone’s life; activities such as mercy killing or physician-assisted suicide which are designed to end a person's life, often to end a person's suffering.