Seoul, Jan 23 (IANS): South Korea's Acting President and Prime Minister Hwang Kyo-ahn on Monday pledged to make constant efforts to address the issue of families separated after the 1950-53 Korean War.

During a meeting on Monday for some of the families with long lost loved ones in North Korea, Hwang also urged Pyongyang to respond to Seoul's demands such as verifying whether the members of their divided families in the North are still alive or dead, Yonhap News Agency reported.

"The (South Korean) government is well aware of the historical gravity of the issue of separated families, and will make every effort to help resolve it," Hwang said, deeming the issue as an "urgent" humanitarian one.

The acting President underscored that the North has yet to respond to Seoul's proposals to hold the reunions of separated families on a regular basis, and allow the families living south and north of the heavily fortified border to exchange letters.

"Without responding (to our demands), the North has repeatedly engaged in reckless provocations such as nuclear tests and missile launches," he said.

According to government data, 131,143 people have been registered as having relatives living in North Korea, Yonhap News Agency reported.

A considerable number of them have already passed away, due in large part to old age.