The file for CBI probe was cleared by Union Finance Minister P Chidambaram last week, sources said.
The decision assumes importance in the wake of a hardline stand taken by the Left parties on divestment issues, including BHEL, ahead of the monsoon session of Parliament commencing on Monday.
The CBI is weighing the options of registering a regular case or a preliminary enquiry into the Centaur hotels' divestment case referred to it by the government.
The agency received a communication from the government on Wednesday to probe the privatisation of two hotels at the Airport and Juhu in Mumbai executed by the previous government in 2002, CBI sources said.