Following a complaint filed by the Director of Vigilance of CSIR, New Delhi against 10 persons, including former scientists and senior officials, the CBI registered three separate cases.

The raids were carried out at 17 places in Maharashtra, New Delhi, Haryana and Bihar, from where the CBI recovered incriminating documents, documents related to property, jewelery and other things, the central investigation agency said.

In the first case, the CBI appointed Dr. Rakesh Kumar, then Director, CSIR-NEERI, Nagpur; Dr. Atya Kapley, former senior scientist and head of the director's research cell; entities Alaknanda Technologies Pvt Ltd., in Navi Mumbai; Enviro Policy Research India Pvt Ltd., Thane; and Emergy Enviro Pvt Ltd., IIT-Bombay at Powai in Mumbai.

The two accused allegedly entered into a criminal conspiracy with the private companies to establish a cartel with rigging bids, splitting of tenders/works in exchange for undue advantages and nepotism, whereby NEERI contracts were mostly awarded to the Powai-based unit.

For the second case, the CBI named Dr Rakesh Kumar, then director, NEERI, Nagpur; Dr Ritesh Vijay, then senior scientist; and Waste to Energy Research and Technology Council-India (WTERT-India), Dadar in Mumbai.

The accused individuals and the entity allegedly conspired to obtain favors from the company in 2018-2019, which was arbitrarily selected without the consent of top CSIR authorities, and Dr. Kumar had associated with the company in 2015- 2016.

In the third case, the CBI named Dr Sunil Gulia, then member scientist of Delhi Zonal Centre, NEERI and later Nagpur; Dr Sanjeev Kumar Goyal, then Principal Principal Scientist; and two entities: ESS Environment Consultants Private Limited (EECPL); and Alaknanda Technologies Private Limited (ATPL), in Navi Mumbai/Thane.

They allegedly hatched a criminal conspiracy to commit major irregularities in the procurement, manufacturing, supply, installation and commissioning of WAYU-II devices, a proprietary property of NEERI, with attempts to create a monopoly for the two companies, circumventing regulations, etc undue advantage.

The CBI said it is continuing investigations into the cases involving allegations of malpractices and corruption against the people and companies involved.