A magistrate who is satisfied by information on oath, that there are reasonable grounds for believing—
(a) that an offence under this Act is being or has been committed; or
(b) that evidence of the commission of any such offence is to be found on any premises,
may issue a warrant to an authorised person to enter and search those premises and to seize any dangerous dog or other thing found there which is evidence of the commission of such an offence.