has within a period of ten years immediately preceding the date of his proposed appointment, been convicted— (i) in Botswana, of a criminal offense, or (ii) outside Botswana, of an offense which, if committed in Botswana, would have been a criminal offence, and sentenced by a court of competent jurisdiction to imprisonment for six months or more without the option of a fine, whether that sentence has been suspended or not, and for which he has not received a free pardon; or