Robert Vadra, the brother-in-law of Congress president Rahul Gandhi, alleged an "unceasing political witch-hunt" in a statement today on social media, days after summons from the Enforcement Directorate over a land scam case in Rajasthan. "This is nothing but a politically motivated, malicious and baseless prosecution," said the 49-year-old businessman married to Sonia Gandhi's daughter Priyanka Gandhi.