Islamabad—Prime Minister Nawaz Sharif has directed Interior Minister Chaudhry Nisar Ali Khan to personally carry out an inquiry into the leak of a controversial Dawn story. Nawaz Sharif directed the interior minister to carry out the probe into this effect freely to bring out unbiased findings so that the real culprits behind it may be nabbed. According to sources, Nisar took the prime minister into confidence on the progress of probe in this respect and both of them exchanged views on the initial investigation report. It has been learnt that the government has evidences/clues as who may be the source(s) who leaked the controversial story to Cyril. Currently the federal government is focusing on two to three of its own functionaries who may be involved in this business and these persons are not allowed to leave the country. Sources said Nisar is committed to unveil the person(s), who were behind the controversial leak, and aims to bring them to justice.