SEOUL (AP):  North Korea fired a short-range missile into the sea early Tuesday, its neighboring countries said, in the latest weapon tests by North Korea hat raised questions about the sincerity of its recent offer for talks with South Korea.

In an emergency National Security Council meeting, the South Korean government expressed regret over what it called a short-range missile launch by the North. South Korea's military earlier said the object fired from North Korea's mountainous northern Jagang province flew toward the North's eastern sea.

The U.S. Indo-Pacific Command said in a statement the launch doesn't pose an immediate threat to U.S. personnel or territory, or to our allies. But it said the missile launch highlights the destabilising impact of (North Korea's) illicit weapons program and that the U.S. commitment to the defense of South Korea and Japan remains ironclad.

Details of the launch were being analyzed by South Korean and U.S. authorities. But Japanese Prime Minister Yoshihide Suga said North Korea fired what could be a ballistic missile and that his government stepped up its vigilance and surveillance.

A ballistic missile launch would violate a U.N. Security Council ban on North Korean ballistic activities, but the council typically doesn't impose new sanctions on North Korea for launches of short-range weapons.

Tests of ballistic and cruise missiles earlier this month were North Korea's first such launches in six months and displayed its ability to attack targets in South Korea and Japan, both key U.S. allies where a total of 80,000 American troops are stationed.

But last Friday and Saturday, Kim Yo Jong, the influential sister of North Korean leader Kim Jong Un, reached out to Seoul, saying her country was open to resuming talks and reconciliatory steps if conditions are met. Some experts said North Korea wants South Korea to work to win it relief from U.S.-led sanctions.

South Korea has called her statement meaningful but urged North Korea to restore communication channels before any talks between the rivals can be arranged.

The communication lines have remained largely dormant for about 15 months, so restoring them could be a yardstick to asses how serious the North is about its offer for conditional talks. Seoul's Unification Ministry said Tuesday North Korea remains unresponsive to South Korea's attempts to exchange messages over the channels.

As the North's missile launch was detected by its rivals on Tuesday, the third round of such tests this month, North Korean Ambassador Kim Song used his speech on the last day of the U.N. General Assembly to justify his country's development of a war deterrent to defend against U.S. threats.

The possible outbreak of a new war on the Korean Peninsula is contained not because of the U.S.'s mercy on the DPRK, it is because our state is growing a reliable deterrent that can control the hostile forces in an attempted military invasion, Kim said. DPRK refers to Democratic People's Republic of Korea, North Korea's official name.

The North's latest outreach came as a response to South Korean President Moon Jae-in's renewed calls for a declaration to end the 1950-53 Korean War in a bid to promote peace on the Korean Peninsula. Seoul officials describe such a declaration as a political and symbolic step because a peace treaty is needed to be signed to formally end the Korean War, which ended with an armistice, leaving the peninsula in a technical state of war.

The three-year conflict pitted South Korea and U.S.-led U.N. forces against North Korea and China, killed 1 million to 2 million people. In his speech at the U.N. last week, Moon proposed the end-of-the-war declaration be signed among the two Koreas, the U.S. and China.

After the North's launch Tuesday, Moon ordered officials to examine its latest weapons firing and previous outreach in a comprehensive manner before formulating countermeasures, according to Moon's office.

A U.S.-led diplomatic effort aimed at convincing North Korea to abandon its nuclear weapons in return for economic and political benefits has been stalled 2 years. U.S. officials have repeatedly expressed hopes for further talks but have also made it clear the long-term sanctions imposed on North Korea will stay in place until the North takes concrete steps toward denuclearization.

While North Korea has tested short-range weapons and vowed to continue building its nuclear arsenal, Kim Jong Un has maintained a moratorium on testing longer-range weapons capable of reaching the American homeland, an indication he wants to keep the chances for future diplomacy with the U.S. alive.