"We will not spare the corrupt. Each one who has looted public money will be booked," Naqvi said during an interaction with women journalists at Indian Women's Press Corps (IWPC).
The Bharatiya Janata Party leader said they will probe into allegations against Vadra.
"The issues around Vadra are serious. It will need probe," he said in response to a question.
The BJP had paralysed the proceedings in both houses of parliament last August, launching a direct attack on Vadra over his alleged involvement in illegal land deals
Naqvi added many skeletons will tumble out of the Congress' cupboard once the BJP comes to power.
"There are many skeletons in Congress' cupboard. Once the BJP comes to power, these skeletons will come out and the Congress will not find any place to run away to," he said.