Seeking a UN Security Council statement against North Korea, US has said that the provocative acts the country will not be tolerated.
"There was a statement of support for South Korea in the G-8, and we continue discussions in New York with countries regarding a statement by the UN (Security Council) regarding the sinking of the Cheonan," the State Department spokesman, P J Crowley said on Thursday.
"We continue to support South Korea and want to see a significant statement come out of the Security Council that makes clear to North Korea that its provocative acts will not be tolerated," he said.
Crowley said he expects that there will be a response from the UN in addition to the statement from the G-8.
On Tuesday, North Korea had sent a letter to the UN Security Council suggesting that there should be a new investigation in the Cheonan that would involve both North Korea and South Korea and potentially others to look again at this issue.
The State Department said there is no need for a fresh investigation.
"We don't think another investigation is warranted at this point. We would like to see North Korea take a different course of action - construct a different kind of relationship with its neighbours," Crowley said.
Asserting that US stands by South Korea, Crowley said there has been a thorough investigation of the sinking of the Cheonan, and it was the evidence that was assembled during that investigation points clearly to North Korea and a North Korean torpedo.
"So we don't think at this point that another investigation is warranted. South Korea led the investigation, included international participation. We think the result is clear and compelling. We continue our discussions in New York about an appropriate and timely response to this provocative action," he said.
"So, at this point, we think it's more important for North Korea to be accountable and to cease its provocative behaviour and seek better relations with its neighbours," Crowley said.