North Korea told South Korea in a surprise letter Tuesday that it was willing to talk about entering the Olympics in Seoul, but insisted again on discussing its demand to co-host the Games, officials said.

The North had said previously it would boycott the Sept. 17-Oct. 2 Games unless it was made a co-host. South Korea and the International Olympic Committee have said some events could be held in the North, but that the Games are awarded to a single host city - in this case Seoul - and not to countries.Aides to Kim Chae-sun, speaker of South Korea's National Assembly, said Tuesday's letter was from Yang Hyong Sop, chairman of North Korea's Supreme People's Assembly. It was received at the border truce village of Panmunjom, they added.

The South Korean government had no immediate comment.