RPG Group Chairman Harsh Goenka has raised alarm over a resurgence of stock market malpractices akin to the Harshad Mehta/Ketan Parekh era, particularly in Kolkata. He expressed concerns about promoters inflating profits and colluding with brokers to artificially boost stock prices to unsustainable levels. Goenka urged SEBI and the Finance Ministry to step in and investigate to protect small investors from potential losses. The warning follows a significant market decline, with the BSE Sensex and NSE's Nifty both experiencing sharp drops.