Families of Japanese nationals abducted by North Korea have called for U.S. President-elect Joe Biden to fulfill the promises made by incumbent President Donald Trump in realizing the return of their loved ones.

"The United States has continued to demonstrate an attitude of cooperation, and there is an expectation that Mr. Biden will also tackle the abduction issue," said Shigeo Iizuka, who heads a group of the victims' families.

The 82-year-old, whose sister Yaeko Taguchi was abducted in 1978 at the age of 22, noted that three successive U.S. presidents — George W. Bush, Barack Obama and Trump — had met with families of the abductees.