Family members of Japanese nationals abducted by North Korea in the 1970s and 1980s on Wednesday pressed the reclusive state to immediately return all kidnap victims.

They made their demand in the United States ahead of the upcoming meeting between U.S. President Donald Trump and North Korean leader Kim Jong Un. Trump has promised to raise the abduction issue during the meeting.

Speaking after a meeting with former U.S. Deputy Secretary of State Richard Armitage just outside Washington, Takuya Yokota, whose older sister was abducted, said he was encouraged by Armitage's comments that Kim has no right to say the issue has been settled and that it is only the victims' families who can declare it closed.