"The CBI is already looking into this issue," Antony told reporters outside Parliament House.
He was asked about the scam and the reports that documents related to Adarsh housing project have gone missing from the records of the Defence Estates office in Mumbai.
Reacting sharply to the reports about missing files, BJP spokesperson Prakash Javadekar said the trend of files going missing from either the ministry or the defence establishment is a serious matter.
"It seems we need something like WikiLeaks to get hold of the missing documents," he said.
The Defence Estates office, which keeps all land records involving local units of defence forces, has also allegedly been unable to trace records regarding the no-objection certificate granted to the Adarsh project in March 2000.