Indian equity markets plunged amid heavy selling, with the key Sensex index falling 2.62%. Overall investor sentiment was low as investors sold frontline stocks, triggered by Satyam's failed bid to acquire its promoter group companies. While most sectors declined, banking stocks were less affected. The fall in markets will likely continue until investors' confidence improves. Satyam shares dropped the most, falling 30.22%, while ICICI Bank and HDFC Bank gained.