The searches by Enforcement Directorate (ED) against three persons linked to Robert Vadra continued on Saturday with official sources saying the action is being undertaken by the agency on the basis of two criminal FIRs filed by it in the past.
They said the central probe agency is questioning at least four persons on the second day of the raids.
The sources also said the agency is recording the statements of these people, who have not been identified till now, under the Prevention of Money Laundering Act (PMLA).
The central probe agency issued a statement late evening but it did not identify the case or the accused.
"Directorate of Enforcement is conducting PMLA investigations in certain cases relating to ownership of undisclosed assets abroad.
"As part of these investigations, the Directorate has carried out search operations on December 7 under PMLA at a number of premises in Delhi-NCR and Bengaluru by issue of search warrants under section 17 of PMLA," it said.
It added that these searches "have been carried out as per the prescribed procedure and documents and digital evidence seized during these searches are being examined."