Even before the dust could settle on the succession issue involving the Chettinad family, the Income Tax department came knocking on their doors. On Wednesday, Income Tax officials conducted raids on 33 places, including offices and houses belonging to industrialist MAM Ramaswamy and Chettinad Group’s Managing Director, MAMR Muthiah (also known as Ayyappan), suspecting tax evasion. 400 officials deputed The …