Русско-англо-русский юридический словарь

A so-called organiser of crime, i.e., the person who organises or leads the conspiracy or plans or directs the crime, is also treated on the same footing as the accomplice. (Some Basic Principles of Hungarian Criminal Law)

Complicity is the participation in a completed criminal act of an accomplice, a partner in the crime who aids or encourages (abets) other perpetrators of that crime, and who shared with them an intent to act to complete the crime.[1]: 725–804  A person is an accomplice of another person in the commission of a crime if they purpose the completion of a crime, and toward that end, if that person solicits or encourages the other person, or aids or attempts to aid in planning or committing the crime, or has legal duty to prevent that crime but fails to make an effort to prevent it properly. (Wikipedia)

Article 33. Types of Accomplices of a Crime

1. In addition to the perpetrator, organizers, instigators, and accessories shall be deemed accomplices. (The Criminal Code Of The Russian Federation, translation into English)

It was one of Mr Hemphill's uncles who was the unwitting accomplice in a crime that had gone undetected for more than 60 years. (Irish News)