Finance Minister P Chidambaram has said today that at this stage, an inquiry cannot be ordered by the government into the business deals between real estate giant DLF and businessman Robert Vadra, who is the son-in-law of Congress president Sonia Gandhi. The deals have been described as illicit by activists Arvind Kejriwal and Prashant Bhushan, who launched an anti-graft political party last week. The shares of DLF fell by over 7 % today.