Prime Minister Manmohan Singh [ Images ] on Wednesday said the government will probe the leakage of the Liberhan Commission report, saying such a "regrettable" thing should not have happened.

"It is regrettable that it (the report) was leaked. It should not have happened. Whoever is responsible, we will inquire into it when I will go back (to New Delhi [ Images ])," Singh told a press conference.

The prime minister said that he was out of the country when it took place and when he returns, he will talk to Home Minister P Chidambaram [ Images ] and others on the matter.

The Liberhan Commission, which probed the 1992 Babri Masjid [ Images ] demolition, had severely indicted top BJP leaders A B Vajpayee, L K Advani [ Images ], Murli Manohar Joshi [ Images ] and 65 others for their role in the demolition for "petty political gains".