North Korea is to send its nominal head of state to South Korea this week as the rivals push through with rare rapprochement steps ahead of this month's Winter Olympics in the South.
Kim Yong Nam, the head of the North's parliament, will be the highest level North Korean official to visit South Korea since the North sent then-number two Hwang Pyong So at the close of the 2014 Asian Games in Incheon, South Korea.
Mr Kim's trip touched off immediate media speculation that direct contacts between Pyongyang and Washington may be possible during the Olympics, with the US sending Vice President Mike Pence to the games that start on February 9.
On Sunday night, the North sent a message via a cross-border communication channel saying its high-level delegation will visit South Korea from February 9-11, the South's Unification Ministry said.
It said the North's delegation includes Mr Kim and three other officials but gave no further details.
Mr Kim chairs the top decision-making body of North Korea's rubber-stamp parliament, and his official title as president of the Presidium of the Supreme People's Assembly made him the North's nominal or ceremonial leader.
Mr Kim, 90, has been frequently seen on state TV making propaganda-filled speeches on key state anniversaries or receiving visiting foreign dignitaries on behalf of leader Kim Jong Un and his late dictator father Kim Jong Il.
Some experts say Kim Yong Nam's actual influence in state affairs has been diminished gradually over the years largely due to his age.
The North dispatching a high-level delegation was part of agreements the two Koreas struck last month over Olympic cooperation.
Under the deals, the North is sending 22 athletes to the Pyeongchang games, who will parade together with South Korean players under a single flag during the February 9 opening ceremony.
Twelve of the North Korean athletes have formed the Koreas' first Olympic team in women's hockey, and the North is also to send a 230-member cheering group and a 140-person art troupe.
The Koreas' reconciliation mood follows a year of heightened tensions over North Korea's advancing nuclear and missile programmes.
Some experts say the North may want to use its Olympic-related overture as a way to weaken US-led international pressure and sanctions.