Officials said the searches were launched at the premises of former Congress MLA Rajesh Jain, a person known to him and some others, in the city.
Jain did not respond to phone calls and SMSes seeking his reaction.
Officials said the agency is looking to collect some evidence in connection with its probe against Tandon and few others, whom it had booked and arrested under the Prevention of Money Laundering Act (PMLA).
The Enforcement Directorate took over the case and registered an FIR under PMLA after taking cognisance of Delhi Police crime branch FIR on alleged fake accounts with deposits worth Rs 34 crore.
The Income Tax Department too is probing the case.
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