Late Chief Minister and former DMK patriarch M Karunanidhi's trusted assistant and secretary K Shanmuganathan died here on Tuesday. Expressing grief, DMK president and Chief Minister M K Stalin hailed Shanmuganathan for his dedicated services as an assistant and secretary to Karunanidhi for about 50 years. Conveying his condolences to the bereaved family, Stalin described Shanmuganathan as 'Kalaignar's Nizhal ' …
