GUWAHATI, Nov 8: The GST Intelligence and Enforcement Unit, Assam, continued its search at M/s Maa Kamakhya Coke Industries for the fourth consecutive day on Sunday over suspected fake input tax credit claims.

The coal trading and coke manufacturing firm operates from Beltola Tiniali and has a manufacturing unit at Amingaon. Investigators suspected it of availing fake input tax credit worth several crore rupees from fake taxpayers. The allegation was that the firm claimed credit against transactions with non-existent entities to avoid paying GST.

The operation began on Thursday, November 5, after a preliminary inquiry found the business involved in availing fake ITC. The team seized several documents and electronic devices on the first day and began verifying them. The search continued on Friday, November 6.

The firm's three proprietors — Anil Kumar Agarwal, Bimal Kumar Agarwal and Naveen Kumar Gupta — were summoned for the investigation. Officials found more than 10 GST registration numbers during the search, widening the probe.

Only Gupta, also known as Naveen Singhal, cooperated with investigators. Anil Kumar Agarwal and Bimal Kumar Agarwal did not cooperate despite repeated notices and could face arrest if they continued to stay away from the probe.

The GST Intelligence team planned to seek assistance from the Enforcement Directorate and the Directorate General of GST Intelligence as the investigation expanded. A GST operation was also under way at Mahalakshmi Continental, owned by Naveen Singhal.