1. A defendant may not be convicted of any offense upon the testimony of an accomplice unsupported by corroborative evidence tending to connect the defendant with the commission of such offense. 2. An "accomplice" means a witness in a criminal action who, according to evidence adduced in such action, may reasonably be considered to have participated in: (a) The offense charged; or (b) An offense based upon the same or some of the same facts or conduct which constitute the offense charged. 3. A witness
A person may not be convicted of any offense solely upon evidence of a confession or admission made by him without additional proof that the offense charged has been committed. N.Y. Crim. Proc. Law § 60.50
In any prosecution for perjury, except a prosecution based upon inconsistent statements pursuant to section 210.20, or in any prosecution for making an apparently sworn false statement, or making a punishable false written statement, falsity of a statement may not be established by the uncorroborated testimony of a single witness. N.Y. Penal Law § 210.50