A Bill of Particulars is governed under the Criminal Procedure Law 200.95. It’s a written statement by the Assistant District Attorney that recites the substance of the defendants conduct encompassed by each charge and whether the People intend to prove that the accused acted as the principle or accomplice or both.  All through the BOP amplifies the criminal complaint it is not required to include details on how the People plan to prove the elements of the offense charged or any item of factual information in the bill of particulars.

The defense lawyer files the BOP within 30 days of the arraignment, and within 15 days of service the assistance district attorney must respond.