spurious gold was handed over by the second accused/petitioner herein to the first accused and the first accused, in turn, pledged the same to 'Anugraha Finance', Nandipulam and obtained loan to the tune of Rs.6,12,000/(Rupees six lakh twelve thousand only). Similarly, the first accused pledged 57.00 gm of spurious gold entrusted by the second accused/petitioner herein and availed gold loan to the tune of Rs.2 lakh from the Inchakkundu Service Co-operative Bank, Mupliyam. The prosecution case is that the above spurious gold was supplied by the petitioner herein and the call details in between the first and the second accused, including the financial transactions, would establish the same, prima facie . Since the prosecution has specific allegation that the second accused is the person, who handed over 220.500 gm (163.500 gm + 57.00 gm) of gold, for the purpose of pledge, his arrest, custodial interrogation and source of the spurious gold are essential part of the investigation. Therefore, custodial interrogation is necessary in this case, as rightly