While a person is being sought for potential arrest, the person may be described variously as being "at large" or as a "
person of interest" to law enforcement. The latter term is frequently used in an "
all-points bulletin" issued to other law enforcement persons or agencies. A person who has
jumped bail after
arraignment in court may be hunted or pursued by his
bail bondsman, and a
bounty may be "on his head." The act of fleeing from the jurisdiction of a court is described colloquially as "fleeing justice" or "running from the Law." A "
wanted poster" may be issued, especially by the FBI, culminating in the "
FBI's Most Wanted List" of fugitives. "On the lam" or "on the run" often refers to fugitives.
Mencken's
The American Language and
The Thesaurus of American Slang proclaim that lam, lamister, and "on the lam"—all referring to a hasty departure—were common in thieves' slang before the turn of the 20th century. Mencken quotes a newspaper report on the origin of 'lam' which actually traces it indirectly back to Shakespeare's time. Mencken also quotes a story from the
New York Herald Tribune newspaper in 1938 which reported that "one of the oldest police officers in New York said that he had heard 'on the lam' thirty years ago." ==Detection methods==