Kim Yo Jong, the sister of North Korea's leader, warned the Biden administration against "causing a stink at its first step" on Monday, hours after the White House said it had not received a response to its outreach to Pyongyang. "We take this opportunity to warn the new US administration trying hard to give off powder smell in our land," she said in a statement, according to the country's state news agency. "If it wants to sleep in peace for (the) coming four years, it had better refrain from causing a stink at its first step," she said. The warning comes as the US and South Korea conduct scaled-down, simulated military exercises and US Secretary of State Tony Blinken and Defense Secretary Lloyd Austin have touched down in the region for meetings with their Japanese and South Korean counterparts. Earlier Monday, White House press secretary Jen Psaki told reporters that the administration had reached out to North Korea, noting they have "a number of channels, as we always have had, that we can reach out through."