Congress general secretary Digvijaya Singh on Thursday lashed out at Comptroller and Auditor General (CAG) Vinod Rai, accusing him of harbouring “political ambitions” like one of his predecessors, TN Chaturvedi. Chaturvedi was the CAG in 1989 when the auditor published a report on the Bofors guns bought by Rajiv Gandhi’s government. After his retirement, Chaturvedi joined the BJP and became an MP and governor of Karnataka.