A top South Korean official offered Monday to hold high-level talks with North Korea in January, as Pyongyang battles growing pressure over human rights and a cyber row with the US.

Ryoo Kihl-jae, the south’s unification minister in charge of North Korean affairs, said he was willing to meet in Seoul or the north’s capital, Pyongyang, for the rare high-level talks.

“I hope that the north will show an active response to this offer,” Ryoo said in a press conference.

“We are willing to discuss any issues of mutual concern,” Ryoo said, adding that a formal proposal had been sent to his North Korean counterpart, Kim Yang-Gon.

Such mutual concerns include a reunion of families separated by the 1950-53 Korean war and various events to mark the 70th anniversary of the division of the peninsula in 1945, he said.

“We need dialogue and co-operation to implement such projects ... I hope the talks will help ease the pain of the separated families before the lunar new year,” he said, referring to the traditional holiday that falls on 19 February.

The last round of formal high-level talks was held in February and resulted in the north hosting a rare union of relatives separated by the conflict.

The two Koreas had earlier agreed to restart dialogue when a top-ranking North Korean delegation made a surprise visit to the Asian Games held in the South in October.

The unusual trip raised hopes of a thaw, but was followed by a series of minor military clashes along the border that renewed tensions and talks never materialised.

Ties were strained further when the north angrily slammed the south for allowing its activists to send anti-Pyongyang leaflets across the border via hot air balloons.

Seoul rejected Pyongyang’s demand to ban such exercises, saying there were no legal grounds to stop free activities by citizens.

Ryoo did not address the issue on Monday, leading some observers to question whether the north would accept his proposal.

“What the north wants from the south is some kind of assurance... to stop the leaflets so I am not sure if the north would embrace the offer easily,” said Hong Hyun-Ik, analyst at Sejong Institute thinktank.

But Pyongyang must be “feeling very cornered” by the ongoing cyber war with the US over the hacking of Sony Pictures in November, which may prompt the north to reach out to Seoul to defuse tension, he added.

“Kim Jong-un’s New Year address should be closely watched to get a clue on whether the North seeks to improve ties or not,” Hong said.

The isolated nation has suffered a mysterious internet outage for the past week after Washington vowed retaliation over the crippling cyber attack on Sony, the studio behind the movie The Interview.

The comedy about a fictional plot to assassinate Kim enraged the north, which slammed it as “an act of war.”

Washington blames Pyongyang for launching the attack on Sony. The north denied involvement and accused the US of shutting its major internet websites.

At the same time, South Korea saw some of its nuclear reactors hit by a string of cyber attacks that led to the leak of information including operation manuals and reactor designs.

Seoul’s justice minister said last week investigators were looking into potential involvement by the north in the attack.

But Pyongyang on Sunday rejected the accusation, calling it “ridiculous conspiracy” by Seoul intended to raise tensions.

The north also faces growing pressure to improve its dismal human rights record as the UN steps up a campaign to refer Pyongyang to the international criminal court for crimes against humanity.