(a) The director may, based on written affidavits, request in writing that a prosecutor apply for an interception order.
(b) The head of a local law enforcement agency or, if the head of the agency is absent or unable to serve, the acting head of the local law enforcement agency may, based on written affidavits, request in writing that a prosecutor apply for an interception order.

(c) Before making a request under Subsection (b), the head of a local law enforcement agency must submit the request and supporting affidavits to the director. The director shall make a written finding as to whether the request and supporting affidavits establish that other investigative procedures have been attempted and have failed or those procedures reasonably appear unlikely to succeed or to be too dangerous if attempted, is feasible, is justifiable, and whether the department has the necessary resources available.
(d) A prosecutor may file the application requested under Subsection (b) only after a written positive finding by the director on all of the requirements provided by Subsection (c).