The Defense Ministry announced Monday it will terminate talks with its South Korean counterpart over the radar lock-on dispute, while revealing what it claims are sounds, converted from radio waves, of the fire-control radar system of a South Korean destroyer.

The 18-second audio file, if genuine, reportedly shows that continuous, intense radar waves were directed at the P-1 anti-submarine patrol airplane operated by the Maritime Self-Defense Force on Dec. 20 in the Sea of Japan.

Japanese defense officials said the wave patterns are completely different from surface search radar waves that Seoul claimed were being used by the South Korean Navy's Gwanggaeto destroyer.