Upon receipt of a properly completed application, the Secretary shall conduct an investigation of the applicant for the purpose of determining whether the applicant may purchase or receive a regulated firearm and whether the information and statements on the application are true and accurate. In conducting the investigation, the Secretary may request the assistance of the Police Commissioner of Baltimore City, the chief of police in any county maintaining a police force, or the sheriff in any county not maintaining a police force. Information discovered during the investigation may be used against an applicant who has provided false or misleading information or has omitted information on the application.