Mont. Code Ann. § 61-7-113

The person in charge of any garage or repair shop to which is brought any motor vehicle which shows evidence of having been struck by any bullet or involved in an accident of which report must be made as provided in 61-7-109 shall report to the department within 24 hours after such motor vehicle is received, giving the engine number, registration number, and the name and address of the owner or operator of such vehicle.