NEW DELHI: The Central Bureau of Investigation has booked senior Karnatakacadre IPS officers Hemant Nimbalkar and Ajay Hilori, along with eight others, in connection with the Rs 4,000-crore I-Monetary Advisory (IMA) scam, in which gullible investors were allegedly cheated in the name of Islamic banking, officials said on Tuesday.The move came after the agency received an approval from the Karnataka government to proceed with its probe into the alleged role of 1998-batch IPS officer Nimbalkar, then posted as the Inspector General, and 2008-batch IPS officer Hilori, then posted as the DCP, Bengaluru East, they said.Along with the two officers, the agency has named Inpsector M Ramesh and sub-inspector Gowri Shankar, both then posted at the Commercial Street police station in Bengaluru, DySP (CID-EOW) EB Sridhara, besides the company, IMA, its founder Mansoor Khan and three of its other directors in a fresh case.The agency had approached the state government, seeking permission to proceed against the two officers, who were in senior positions in the Karnataka police, and had allegedly helped Khan, the officials said.