The license of any private security officer or private security company may be suspended or revoked at any time by the chief of police for violation of any of the requirements set out in this chapter or for violation of any rule or regulation established pursuant to this chapter. Upon a violation occurring, the chief of police shall give the private security officer or private security company notice of any suspension or revocation hearing at least five (5) days prior to the date of public hearing. Such notice shall be furnished by mail. The suspension or revocation hearing well be conducted by the city board of trustees. (Prior Code, Sec. 5-36)