"We have conducted searches at seven premises in the city," a police official said.
The Economic Offence Wing of the Mumbai Police is probing an alleged cheating case of Birla Power Solutions Pvt Ltd, against which 28 investors had filed a complaint against the firm.
The Income Tax Department recently conducted searches on the group for alleged tax evasion, while the ED had grilled Yash Birla.
The searches were conducted at about 20 premises of the group in Mumbai and New Delhi.
On January 10, top executive of the group Anand Vadhan was arrested by Narcotics Control Bureau for alleged possession of five grams of cocaine.