An Indiana Subpoena to Testify at a Hearing or Trial in a Criminal Case is a written court order issued by the court to a witness that requires them to appear in court and provide testimony in a criminal case. The purpose of the subpoena is to ensure that a witness is present to testify in criminal proceedings. There are two types of Indiana Subpoena to Testify at a Hearing or Trial in a Criminal Case: 1. A subpoena ad testificandum: This is a subpoena that requires the witness to appear in court to give testimony. 2. A subpoena duces tecum: This is a subpoena that orders the witness to bring specific documents or other materials to court. These subpoenas are typically issued by the court clerk, signed by a judge, and served to the witness by a law enforcement agency. They must be served at least seven days in advance of the scheduled hearing or trial. Failure to comply with the subpoena and appear in court could result in a contempt of court order, which could result in fines or other legal consequences.