Robert Copeland Jun 2, 2011:

It cut off my comment below: A criminal charge of aiding and abetting or accessory can usually be brought against anyone who helps in the commission of a crime, though legal distinctions vary by state. A person charged with aiding and abetting or accessory is usually not present when the crime itself is committed, but he or she has knowledge of the crime before or after the fact, and may assist in its commission through advice, actions, or financial support. Depending on the degree of involvement, the offender's participation in the crime may rise to the level of conspiracy.

lorenab23 Jun 2, 2011:

It sounds to me That this is an accessory:
An accessory is a person who assists in the commission of a crime, but who does not actually participate in the commission of the crime as a joint principal.
An accessory must generally have knowledge that a crime is being, or will be committed. A person with such knowledge may become an accessory by helping or encouraging the criminal in some way, or simply by failing to report the crime to proper authority. The assistance to the criminal may be of any type, including emotional or financial assistance as well as physical assistance or concealment.
http://en.wikipedia.org/wiki/Accessory_(legal_term)

José Manuel Lozano Jun 2, 2011:

La cooperación necesaria no es un tipo de delito, sino un grado de participación en la comisión de un delito (autor, cooperador necesario, cómplice, encubridor).