Photo/IllutrationKim Hyun-chong, deputy director of South Korea's presidential National Security Office, briefs on the termination of the General Security of Military Information Agreement, or GSOMIA between South Korea and Japan, at the presidential Blue House in Seoul on Aug. 23. (AP Photo)

SEOUL--South Korea's foreign ministry said on Friday it has officially notified Japan of its decision to end an intelligence-sharing agreement.

South Korea said on Thursday it was scrapping the intelligence-sharing pact with Japan, called the General Security of Military Information Agreement (GSOMIA), further straining ties amid a dispute over South Koreans who were laborers during Japan's wartime occupation of Korea.