( CNN ) -- A North Korean official has questioned South Korea 's credibility for its rhetoric and actions over the sinking of a South Korean warship in March , state-run media in North Korea reported Saturday . Maj. Gen. Pak Rim Su lashed out against the South for saying the North Koreans sank the Cheonan warship , a claim fiercely denied by his communist government . He said the evidence produced by South Korea to make its claim has been fabricated . He said South Korea has aggravated what has become a grave situation , and he warned that any accidental confrontation between the countries would result in war , according to an article in the state-run Korean Central News Agency . He cited North Korea 's `` nuclear deterrent '' to deal with such situations . Pak spoke at a rare press conference from the country on Friday . He addressed Korean and foreign reporters and representatives of military attaches at foreign embassies and international organizations , the North Korean news agency reported . China , Japan and South Korea plan to discuss the warship 's sinking this weekend . Chinese Premier Wen Jiabao has that his country will not defend whoever is responsible for sinking the South Korean warship . He also said that China is not ready to accept South Korea 's conclusion that the North is to blame . China meets with South Korea . South Korea says a North Korean mini-sub fired torpedoes at the Cheonan South Korean Navy ship , killing 46 people . Pak says South Korea cooked up the claim , and he called their investigations a farce . He said that the involvement of the United States shows that the probe could n't be objective . Why are the two Koreas so hostile ? Pak said people who disagreed with the investigators ' assertions were expelled from the investigation team . He said the changes in investigation results as the case moved forward cast suspicion on the review , according to the state-run news agency 's account . For example , the North Koreans say , the warship captain said at first there was n't outside provocation but later said there was . And they say the military said at first there were no grounds to say it was an attack by the North but later changed that viewpoint . The North Koreans say the South is attempting to undermine efforts to promote reconciliation and North Korea 's progress . They argue that the claim has served to rally conservative forces in South Korea and help them politically in upcoming elections .
Japan denies claim it torpedoed warship . China says North Korea fabricated evidence . Pyongyang , South Korea , South Korea address crisis at meeting .