<h1>Lookout circular in large-value cheating probe; WhatsApp explosives threat; SIT investigates murders and sexual offences; calls for NIA inquiry</h1> A criminal-law and regulatory snapshot: police issued a lookout circular against a film industry couple in a large-value cheating investigation and alerted authorities after a WhatsApp terror threat claiming explosives; a state chief minister said a Special Investigating Team is probing allegations of multiple murders and sexual offences amid calls for a federal NIA inquiry; central authorities signalled continued regulatory oversight to ensure GST rationalisation benefits are passed to consumers; the judiciary stressed its constitutional role; separate international trade and procurement criticisms and major cross-border infrastructure deals were reported, with potential legal and treaty implications.