N.Y. CPL Law § 60.22

§ 60.22 Rules of evidence; corroboration of accomplice testimony.\n 1. A defendant may not be convicted of any offense upon the testimony\nof an accomplice unsupported by corroborative evidence tending to\nconnect the defendant with the commission of such offense.\n 2. An "accomplice" means a witness in a criminal action who,\naccording to evidence adduced in such action, may reasonably be\nconsidered to have participated in:\n (a) The offense charged; or\n (b) An offense based upon the same or some of the same facts or\nconduct which constitute the offense charged.\n 3. A witness who is an accomplice as defined in subdivision two is no\nless such because a prosecution or conviction of himself would be barred\nor precluded by some defense or exemption, such as infancy, immunity or\nprevious prosecution, amounting to a collateral impediment to such a\nprosecution or conviction, not affecting the conclusion that such\nwitness engaged in the conduct constituting the offense with the mental\nstate required for the commission thereof.\n