This is the third time Vadra was questioned this week.
ED officials had quizzed Vadra on Wednesday and Thursday as well.
On Thursday, his questioning started at around 9.20 am. It was only at around 9.20 pm that his wife and now Congress general secretary Priyanka Vadra reached the ED office and thereafter, the duo headed back to their residence in their heavily guarded convoy as per their entitlements.
Vadra's lawyer KTS Tulsi had earlier alleged that the ED was leaking information about his questioning. He claimed that the probe agency has nothing concrete against his client.
The Patiala House court has granted interim bail to Vadra on February 2 till February 16 in connection with the case.
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