North Korea has said that its people and army would probe the truth behind the March 26, 2010 "Cheonan" warship sinking case "to the end."

The official Korean Central News Agency (KCNA) quoted a North Korean representative as saying in national capital Pyongyang that the U.S. proposal for creating a "joint assessment group" and inspecting North Korea's military base at the last round of the contact was "a politically motivated provocation" as it infringes upon the sovereignty and dignity of the country.

The proposal made by the U.S. side was "nothing but a sinister intention to link the "Cheonan" case with the DPRK," Xinhua further quoted him, as saying.

The U.S. was in collusion with South Korea on the "Cheonan" case and their investigation results were "unilateral and unscientific", the KCNA said.

The DPRK warned that its army and people would take stronger counteraction unless the U.S. stops military provocations against it and stops "wrecking peace and stability in the Korean Peninsula." (ANI)