(a) (ia) to PW4. In the circumstances, we find that the learned trial judge had rightly arrived at the following ultimate facts at pages 212 and 213, Appeal Record Vol 2: “[15] It is safe to say at the outset that the prosecution has established through PW2 and PW4 clear and credible evidence, which is 10 unchallenged by the defence, that the Accused was carrying a green plastic bag [Exhibit P7(a)(ia)] at the material time. [16] Learned Deputy Public Prosecutor [the DPP] submitted that the prosecution has shown that the drugs in Exhibit P7 (a) (id)(1 - 5) were found in the possession of the Accused, who had knowledge, control and custody of the drugs seized from him. In this connection, the prosecution relied on the testimony of PW4, to whom the Accused handed over the green plastic bag [Exhibit P7 (a) (ia)], what he found inside that green bag, and the testimony of PW2 who corroborated PW4’s testimony.” [18] Flowing from the above, we also find that the learned trial judge had rightly considered that there is no conflict and doubt as to the nature of the drugs in the possession of the appellant. The prosecution witnesses PW2 and PW4 had testified that the drugs were found in the silver packets. Both PW2 and PW4 had also testified that the search in the apartment did not result in any finding of incriminating exhibits. The testimony of PW2 shows that after PW4 handed over to him the drugs, the drugs were in his custody. Although PW4 later said that the silver plastic packets were also opened by the appellant in front of Inspector Khairil in the said apartment, the silver packets were the same plastic packets that were seized from the appellant before they went up to the apartment. On this issue, which was strenuously regurgitated again before us, the learned trial judge, rightly as he did, made the following findings at pages 214-215, Appeal Record Volume 2: “[19] Counsel for the Accused submitted that the prosecution has led two sets of evidence which are irreconcilable and striking at each. It was submitted that the cogent evidence of PW4 has raised a reasonable doubt in respect of the accuracy of the evidence of PW2, and also a serious doubt as to the exact nature of the drugs allegedly contained in the plastic bags handed over to PW4. Since PW4 did not testify as to 11 the nature of the drugs in the plastic bag which was opened by the Accused at the apartment, there is, therefore, a serious gap in the prosecution’s evidence which is fatal to the prosecution case. [20] With respect, I do not agree that there were two irreconcilable versions. Although, according to PW4, the Accused had open the plastic bag and also the silver packets in the apartment in the presence of Inspector Khairil, it has not created a material doubt on the nature of the drugs contained in the silver packets. It is significant to note that the defence never challenged PW4’s evidence that he had opened the seized Exhibits in the said parking area and what he had found inside. Similarly, PW2’s corroborative evidence in this respect have remained unshaken in cross-examination and further cross-examination [when PW2 was recalled when a new counsel took over]. [21] It is further noted that even though the Accused had opened the plastic bag and also the silver packets in the apartment in front of Inspector Khairil as testified by PW4, there is no suggestion whatsoever that the contents found inside these two exhibits were different from what PW4 earlier found when he opened them and checked at the said parking lot. [22] The evidence showed that PW2 opened the seized Exhibits in the said parking lot in the absence of Inspector Khairil as he was not around; then the Accused opened the plastic bag and the silver packets in the apartment in the presence of Inspector Khairil after he returned to the scene. [23] In the absence of any suggestion that the contents in the black bag and the silver bags as seen by the Accused when he opened it in the apartment are different from the one seen and found by PW4 and witnessed by PW2, the fact that the Accused had also opened the plastic bag and the silver bags does not cast doubt or render incredible the evidence of PW2 and PW4 on what they had found in the seized Exhibits and what PW2 had reported in Exhibits P4 and P5. [24] In my view, the prosecution has adduced ample credible evidence as to the nature of the drugs found in the five silver packets [Exhibit P7(a)(id)(1-5)] and that the Accused had knowledge of the contents of the green plastic bag that he was carrying.” 12 [19] In addition, we respectfully agree with the learned trial judge’s finding as to the non-calling of Inspector Khairil at pages 228-229, Appeal Record, Vol 2 as follows: “[70] Counsel for the Accused made an issue over the prosecution not calling Inspector Khairil. It was submitted that despite the name of Inspector Khairil was mentioned by PW4 where he, in answer to Q 386 in cross-examination, said that the Accused also opened the aluminium packet in front of Inspector Khairil, the prosecution never called him to deny or to deny such allegation. [71] Bearing in mind the trite principle that the prosecution needs only to call witnesses who are necessary to unfold the narrative of the prosecution’s case, I am of the opinion that the non-calling of Inspector Khairil or D/C Lee does not create a gap, let alone a fatal gap in the prosecution’s case. This is because the prosecution had unfolded the events of discovery of the drugs from the Accused through PW2 and PW4.” We, therefore, find no merit in learned counsel’s argument on this issue. [20] On trafficking, it is now trite that the prosecution may rely on either of the presumptions, s 37 (d) or s 37 (da), to prove its case as expounded in the Federal Court case of PP v Abdul Manaf Muhamad Hassan