North Korea fires 'unidentified ballistic missile,' South Korean military says

SEOUL, South Korea -- North Korea fired "an unidentified ballistic missile" toward the East Sea on Thursday, according to South Korea’s Joint Chiefs of Staff.

The U.S., Japan and South Korea later condemned the missile launches, calling them "clear violations of multiple U.N. security council resolutions" and adding that they "demonstrate the threat the DPRK’s unlawful weapons of mass destruction and ballistic missile programs pose to the region, international peace and security, and the global non-proliferation regime."

National security adviser Jake Sullivan met with Japanese security officials in Tokyo on Thursday and the group pledged their "intent to redouble their collective efforts to uphold peace and stability in the Indo-Pacific," according to a statement.

U.S. Indo-Pacific Command Public Affairs released a statement saying it was "aware of the ballistic missile launches and are consulting closely with our allies and partners. While we have assessed that this event does not pose an immediate threat to U.S. personnel or territory, or to our allies, the missile launches highlight the destabilizing impact of the DPRK’s unlawful WMD and ballistic missile programs."

ABC News' Molly Nagle and Matt Seyler contributed to this report.