The infrastructure and steel firms have been the biggest violators as Central GST authorities have detected Rs 2,645 crore tax evasion since GST inception. It is informed by the officers of the directorgeneral of GST Intelligence and local GST commissionarates that fake invoices were generated through shell companies located in based in Hyderabad, Visakhapatnam, Delhi, Mumbai and Kolkata. It was further informed that around 38 GST fraudsters have been arrested in Telangana. Overall, around 20,233 cases were bookedand evasion of Rs 93,462 crore detected. It involves he arrest of 408 persons in the past three years.