3.7. Subsequently, P.W.13 sent separate requisition letters to the Chief Educational Officer, Salem and Superintending Engineer, National High Ways Department, Salem, seeking to render assistance by providing witnesses to carry out the intended trap. On 29.07.2011 at about 4.00a.m., P.W.3-Elangovan, Assistant then employee of the office of the Chief Educational Officer, Salem, and one Sathiyamurthy, Assistant, then employee of the office of the Superintending Engineer, National High Ways circle, Salem, appeared before P.W.13. After formal introduction with P.W.2, P.W.3 and witness Sathiyamurthy were appraised of the case details by furnishing the copy of complaint and the FIR. Thereafter, P.W.2, the complainant, had handed over a sum of Rs. 1500/- to P.W.13 in the denomination of two five hundred and five one hundred rupee currency notes. With the help of P.W.3 Elangovan and the witness-Sathiyamurthy, P.W.13 noted the serial numbers of the currency notes(M.O.3) in the Entrustment Mahazar -Ex.P3. Thereafter, P.W.13 with the assistance of Head-constable-Murugan, conducted model Phenolphthalein test on M.O.3 series currency notes and explained the significance of the test of all concerned. M.O.3 series, Phenolphthalein coated currency notes, were entrusted to P.W.2 by P.W.13 through witness Sathiyamurthy to be handed