SEOUL, South Korea — North Korea has tested a new tactical weapon, the North’s official news media said on Friday, reporting that Kim Jong-un witnessed the event in his first publicized visit to a weapons test site since the country test-launched its intercontinental ballistic missile last November.

State media did not identify the weapon, and the test did not appear to violate the voluntary moratorium North Korea imposed on nuclear and long-range ballistic missile tests this year. Still, Mr. Kim’s renewed activities at weapons test sites could complicate the already stalled talks between North Korea and the United States over how to remove the North’s nuclear weapons.

North Korea tends to use the prospects of rising tensions on the Korean Peninsula as leverage when negotiations with Washington do not go in its favor. In recent weeks, it has issued vague threats that it might resume testing nuclear weapons and ballistic missiles should the United States continue to refuse to make concessions like easing sanctions.

On Friday, the North’s official Korean Central News Agency said Mr. Kim visited the testing ground of the Academy of Defense Science, the center of weapons development in North Korea, and “supervised a newly developed ultramodern tactical weapon test.”