A press release was read out at the conference. It said that the truth about the case has not yet been probed one year since the case occurred.

In this period the media, civic and public organizations, experts, lawmakers and others have analyzed the "government's" results of the investigation into the case time and again and raised many doubts about the place and time of sinking, torpedo design, adsorbent, etc., it noted.

It accused the authorities of threatening and mocking at those who made objected to their assertion and suppressing them by mobilizing the police and judicial mechanism.

Over the past one year the "government" and the military authorities have intensified the anti-DPRK confrontation moves such as the total suspension of the south-north dialogue, block of NGOs' exchange and large-scale joint war maneuvers against the DPRK based on the results of the investigation full of doubts and lies, it noted.

The U.S. is building the tripartite military alliance with Japan and south Korea with the case as a momentum and holding unchallenged military supremacy in Northeast Asia, it said.

It demanded the authorities clarify the truth about the case though belatedly.

On the same day Kyunghyang Daily News carried an article saying that the far-fetched assertion of the authorities on the case is triggering controversy.