Sri Lanka, Feb. 9 -- China on Monday (Feb 9) denied US allegations it had conducted secret nuclear explosive tests, calling them "outright lies" and accusing Washington of making excuses to start up its own trials.

At the UN Conference on Disarmament in Geneva on Friday, Thomas DiNanno, US Under Secretary of State for Arms Control accused China of conducting the tests, including one on Jun 22, 2020, and of preparing for more tests with massive yields.

"The US allegations are completely groundless and are outright lies. China firmly opposes the US attempt to fabricate excuses for its own restarting of nuclear tests," China's Ministry of Foreign Affairs said in a statement to AFP on Monday.

It also urged the United States to "immediately...