New Delhi, Sept. 3 (PTI): Prime Minister Manmohan Singh today promised a thorough probe, including by CBI, into the missing coal files case, if the required papers were not traced, but the Opposition was dissatisfied and stalled the House proceedings.

Amid attack from the Opposition, he insisted in Parliament that the government was making all efforts to locate the untraced documents and its intent to facilitate a proper probe should not be questioned as it had “nothing to hide”.

Contending that there should be no “hasty” conclusion that something was “fishy”, he said a “vast majority” of papers sought by the CBI had been handed over and the government would abide by the Supreme Court timeline for handing over of all the files.

“I would like to emphasise that the government is making all efforts to locate the papers requisitioned by the CBI and, at this stage, it would be premature to say that some papers are indeed missing,” Singh said in identical statements in both the Lok Sabha and the Rajya Sabha on demands by members.

“If the records in question are indeed found missing, the government will carry out a thorough investigation and ensure that the guilty are brought to book,” the Prime Minister said.