What is a lunacy warrant?

Answer:
This MAY be a reference to a mental health commitment order, which can be issued by the court upon the showing of cause that the named individual may be an imminent threat to themselves or others due to mental illness. This empowers the authorities (not necessarily law enforcement - although it is they who usually get to carry it out) to take someone into custody for commitment to a mental hospital for observation or treatment.
First answer by Bob811. Last edit by Bob811. Contributor trust: 1155 [recommend contributor recommended]. Question popularity: 92 [recommend question].