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2. Managing Mens Rea in Singapore - Singapore Academy of Law

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336S<strong>in</strong>gapore <strong>Academy</strong> <strong>of</strong> <strong>Law</strong> Journal (2006)knows the nature <strong>of</strong> the controlled drug. It is open to the accused to rebutthese presumptions: PP v Hla W<strong>in</strong> … The Court <strong>of</strong> Appeal <strong>in</strong> Tan Ah Teev PP … considered the sort <strong>of</strong> explanation required to rebut thepresumption <strong>of</strong> knowledge <strong>of</strong> the nature <strong>of</strong> the drug under s 18(2)MDA …. The court approved the approach <strong>of</strong> Lord Pearce <strong>in</strong> the House<strong>of</strong> Lords decision, R v Warner …, accept<strong>in</strong>g that the word “possession”<strong>in</strong> the MDA should be construed as Lord Pearce had construed it.…The position under our law, therefore, is that possession is proven oncethe accused knows <strong>of</strong> the existence <strong>of</strong> the th<strong>in</strong>g itself. Ignorance ormistake as to its qualities is no excuse. The appellant knew that the tabletwas <strong>in</strong> his car. He believed it to be a sleep<strong>in</strong>g pill, which, like the aspir<strong>in</strong><strong>of</strong> the hypothetical <strong>in</strong> Warner and Tan Ah Tee, is a drug. As such, hisignorance as to the qualities <strong>of</strong> the tablet did not provide him a defenceto the charge <strong>of</strong> possession …[emphasis added]43 The opposite has happened – <strong>in</strong>stead <strong>of</strong> Tan Ah Tee be<strong>in</strong>g madeto conform to the majority decision <strong>in</strong> Hla W<strong>in</strong>, Hla W<strong>in</strong> has beenconscripted to the cause <strong>of</strong> Tan Ah Tee. It went totally unnoticed that itdefies any known logic to say, on the one hand, that the accused is opento rebut the presumption that he did not know the nature <strong>of</strong> the drug,and then to say that even if he does succeed, it is not an excuse. Shan KaiWeng was thankfully not a capital case, 64 but there is every danger that thesame k<strong>in</strong>d <strong>of</strong> reason<strong>in</strong>g will prevail even where the death penalty is atstake.44 The confusion between knowledge and negligence permeatesanother set <strong>of</strong> crimes – the immigration <strong>of</strong>fences. The orig<strong>in</strong>al provisionsfor the <strong>of</strong>fence <strong>of</strong> harbour<strong>in</strong>g were simple: 65Any person who … harbours any person who has acted <strong>in</strong> contravention<strong>of</strong> the provisions <strong>of</strong> this Act or the regulations … shall be guilty <strong>of</strong> an<strong>of</strong>fence …64 It was a charge <strong>of</strong> possession simpliciter for which the death penalty is not theprescribed punishment, but there is no <strong>in</strong>dication <strong>in</strong> the cases that the mean<strong>in</strong>g <strong>of</strong>possession on a charge <strong>of</strong> mere possession is any different from the mean<strong>in</strong>g <strong>of</strong>possession for the purpose <strong>of</strong> traffick<strong>in</strong>g, which is a capital crime. One hopes that ifthe courts <strong>in</strong>sist on adopt<strong>in</strong>g Tan Ah Tee and Warner for mere possession, they canat least contemplate a different def<strong>in</strong>ition for possession for the purpose <strong>of</strong>traffick<strong>in</strong>g.65 Sections 57(1)(d), 57(1)(ii) and 57(7), Immigration Act (Cap 133, 1995 Rev Ed).

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