North Korea threatened Thursday to disclose voice recordings of a secret meeting it had with South Korea last month, during which Seoul allegedly proposed holding a series of inter-Korean summits.

In a surprise move earlier this week, North Korea reported that the two Koreas held a secret meeting, during which Seoul negotiators had "begged" for three inter-Korean summits, the first in late June at the border village of Panmunjom, second in September in Pyongyang and third in Seoul on the sidelines of an international security summit.

South Korea did not say whether it actually had proposed holding such summits but insisted that the secret meeting was to coax North Korea into issuing an apology for its two deadly attacks on the South last year as an exit from the current deadlock in inter-Korean relations.

The North's threat, reported by its Korean Central News Agency, appears aimed at refuting the South Korean claim. (Yonhap News)