Upon receipt of an application, the City Administrator shall forward it to the City of Keyser Chief of Police or his designee who shall conduct an investigation of the background of the applicant.  The City Administrator may refuse to grant a license to any applicant, or may suspend, revoke or refuse to renew the license of any licensed purchaser if the police investigation reveals that any of the following has occurred:
   (a)   The applicant or purchaser has violated any provisions of this article;
   (b)   A similar license issued to the applicant or licensed purchaser has been suspended or revoked, or has been refused, in another jurisdiction;
   (c)   The applicant or licensed purchaser has been convicted of a felony or theft offense within the five years immediately proper to the submission of an application or request for renewal of a license in the City of Keyser.
   (d)   The applicant has falsified the application for license.