CBI has finally filed a charge sheet against former Telecom Minister Dayanidhi Maran and his brother Kalanithi who owns Sun TV, and others, for allegedly using 764 high-speed data lines at his residence for the benefit of Sun TV when he was a minister. The charge sheet says that altogether 764 telephone numbers were provided to Dayanidhi for which no bills were raised causing a loss of Rs 1.78 crore to BSNL, Chennai and MTNL.