LUCKNOW, Dec. 27 -- With the arrest of eight members, the UP Special Task Force (STF) has busted a major organised inter-state GST evasion gang that allegedly caused a revenue loss of over Rs.500 crore through fake firms, forged invoices and bogus e-way bills, officials said in a statement issued on Friday. Officials said the racket was spread across several states, including Tamil Nadu, Kerala, Telangana, Karnataka, Andhra Pradesh, Delhi, Jharkhand, Madhya Pradesh, Gujarat, Maharashtra, Bihar and Assam. In UP, fake firms were registered in Meerut, Hapur, Ghaziabad, Noida, Kanpur, Lucknow, Varanasi and Agra. The accused have been identified as Ramesh Patel of Deoria, currently residing in Delhi; Ankur Tiwari of Gautam Buddh Nagar; Swatantra Kumar Tiwari of Ghaziabad; and five Meerut residents -- Mohammad Wasim, Mohammad Sohail, Javed Malik, Ikramuddin and Dilshad Malik. The STF recovered 90 forged rubber stamps of fake firms, 54 cheque books of different banks, 54 debit and credit cards, seven PAN cards, seven Aadhaar cards and four voter ID cards, five fake transport company bill books, three laptops, 18 mobile phones, 25 files related to bogus billing and four four-wheelers....