If the chief inspector at any time, by virtue of information submitted to him by anyone, and after investigation, is of the opinion that the holder of a certificate of competency was guilty of gross negligence or misconduct in the execution of his duties as holder of such certificate, he may forthwith suspend or cancel such certificate or he may as he may deem fit refer the matter to the Commission of Examiners for investigation and on the recommendation of the Commission he may suspend or cancel such certificate.