Obeng Comfort v Public Prosecutor

To rebut the statutory presumption of knowledge of the nature of a drug (s 18(2) Misuse of Drugs Act), an accused must, as a matter of practical reality, be able to say what he thought or believed he was carrying; a bare assertion that he did not know what he was carrying will generally not suffice, and wilful blindness operates as a means of proving actual knowledge by irresistible inference.