A case has been filed against two brothers operating a firm that was given a contract for online booking of the Tadoba Andhari Tiger Reserve (TATR) in Maharashtra's Chandrapur district, after it came to light that they allegedly indulged in irregularities worth more than Rs 12 crore, police said.

The accused duo, Abhishek Vinodkumar Thakur and Rohit Vinodkumar Thakur, are residents of Chandrapur city, and a case of cheating was registered against them at Ramnagar police station on Friday, they said.