Wankhede and others had allegedly demanded Rs. 25 crore bribe for not framing Aryan Khan in the alleged drug bust, said officials.
The CBI conducted searches across Mumbai, Delhi, Ranchi, and Kanpur.
Wankhede was the Mumbai zonal chief of the Narcotics Control Bureau (NCB) when he and others raided a cruise ship off the city's coast in 2021.
Aryan Khan, who spent four weeks in jail, was cleared of all charges by the anti-drugs agency in May 2022 due to a "lack of sufficient evidence".
Earlier, a Special Investigation Team (SIT) set up by the anti-drugs agency claimed the probe led by Wankhede had several lapses.
Wankhede was transferred to the Directorate General of Taxpayer Services in Chennai in May last year.