<h1>Undercover GST investigation exposes supplier using closed firms to suppress sales, prompting seizure and ledger blockage.</h1> Uttarakhand GST officials covertly floated and staffed firms to engage a supplier suspected of evading GST by misusing closed-entity names and suppressing sales; documents on sales, purchases, stock movement and financial transactions were seized during a search and seizure, recoveries were deposited to the GST exchequer and ledgers blocked pending forensic analysis.