It was for the third time that the businessman Robert Vadra was questioned by the Enforcement Directorate in a money laundering case.
Robert Vadra is husband to Congress leader Priyanka Vadra and also brother-in-law of Congress chief Rahul Gandhi.
Robert Vadra, however, says that he is being targetted for political reasons.
It is learnt that he was asked about properties worth around 12 million pounds in London that allegedly belong to him.
Vadra has also asked about the key persons involved in the case — controversial arms dealer Sanjay Bhandari and his relative, and two others.