As many as 678 corruption cases were under investigation by the Central Bureau of Investigation (CBI), 25 of them for more than five years, as on December 31, 2019, a latest report by the Central Vigilance Commission has said. The CBI is normally required to complete investigation of a registered case within one year.

"Completion of investigation would imply filing of charge sheets in courts wherever warranted, after receipt of sanction from the competent authority. The Commission has observed that there have been some delays in completing investigations in certain cases," the CVC''s annual report for 2019 said.