The judge of the district court, before issuing a warrant, must examine the complainant on oath and any other witnesses he may produce, take their depositions in writing and cause the same to be subscribed by the person or persons making them. The depositions must set forth facts and circumstances tending to establish the ground or grounds of the application or probable cause for believing that a ground exists authorizing a search warrant to issue.
Ala. Code § 28-4-255 (1975)