Congress leader Sonia Gandhi’s son-in-law Robert Vadra is expected to appear before the Enforcement Directorate on Wednesday in connection with a money laundering case relating to alleged possession of illegal foreign assets, official sources said.

Vadra was directed by a Delhi court to cooperate with the investigation being carried out by the central probe agency after he knocked on its door seeking anticipatory bail in this case.

The sources said Vadra, once he appears, will be grilled about the transactions, purchase and possession of certain immovable assets in London and his statement will be recorded under the Prevention of Money Laundering Act.

Delhi’s Patiala House Court had on Saturday granted interim protection to Robert Vadra till February 16 in the money laundering case.

Vadra’s lawyer KTS Tulsi had ensured in the court that Vadra will join the ED investigation on February 6.

The case relates to ownership of undisclosed assets abroad worth 1.9 million pounds allegedly belonging to Vadra.

The ED had also lodged a money laundering case against Vadra’s close aide, Manoj Arora after his role surfaced during the probe of another case by the Income Tax Department under the new Black Money Act and tax law against absconding arms dealer Sanjay Bhandari.

It said the London-based property was bought by Bhandari and sold in 2010 for the same amount despite incurring additional expenses on its renovation.