Chief Cabinet Secretary Yoshihide Suga said Friday the administration will be briefed by Isao Iijima, Prime Minister Shinzo Abe's adviser currently visiting North Korea, after he returns to Japan later this week.

Iijima, who went to Pyongyang on Tuesday, will return home as early as Saturday after meeting with senior North Korean officials, including the No. 2 man, Kim Yong Nam.

There has been much speculation about what Iijima has been discussing.