93.—(1) Where—

(a) an application is made for the registration of the owner of any land in respect of which an examination of title is required, or

(b) F118[the Authority] has occasion, in the course of F119[its] duties, to investigate the title to registered land or to a burden on registered land,

an affidavit shall be produced to the effect that, to the best of the deponent’s knowledge and belief, all deeds, wills, instruments of title and incumbrances affecting the title, and all facts material to the title, have been disclosed to F118[the Authority].

(2) F118[The Authority] may require any person making an affidavit in pursuance of this section to state in the affidavit what means he has had of becoming acquainted with the several matters referred to in the section; and if F118[the Authority] is of opinion that any further evidence is necessary or desirable, F119[it] may refuse to effect the registration, or to make or cancel any entry in the register, until such further evidence is produced.