N. Korea's testing of rocket launcher North Korean leader Kim Jong-un (left) stands next to a super-large multiple rocket launcher in South Pyongan Province in western North Korea on Tuesday, as he oversees the launcher's testing, in this photo released by the North's Korean Central News Agency on Wednesday. — YONHAP/VNA Photo

SEOUL — North Korea said on Wednesday that it tested a "super-large" multiple rocket launcher the previous day, but stopped short of declaring the test as a success, raising speculation that the latest firing might have failed to reach its intended targets.

On Tuesday, South Korea's military said that the North fired two short-range projectiles eastward from its western region, saying both flew about 330km at a maximum altitude of 50-60km.

North Korean leader Kim Jong-un "gave field guidance to the test-fire of super-large multiple rocket launcher again on Tuesday," the Korean Central News Agency (KCNA) said.

Kim also said that the latest test has finally verified aspects related to the weapon's combat operation, trajectory characteristics, accuracy and precise homing functions, adding the remaining step is to carry out a test "which is most vivid character in terms of the power of multiple rocket launcher."

The KCNA, however, did not mention whether the test was a success, in contrast to its previous launch on August 24, when the North claimed it conducted a "successful test-fire of a newly developed super-large multiple rocket launcher."

Some experts speculate that one of the fired projectiles might not have reached its intended target, presumed to be waters off the North's east coast.

Photos released by the North's media showed the projectiles were launched from a transporter erector launcher (TEL) that appeared to have four launching tubes. As one of the four seemed to be covered, some raise the possibility that the North might have fired three projectiles the previous day.

Tuesday's launches marked the 10th weapons test North Korea has conducted this year and came weeks after the August 24 launches.

The latest weapons test came just hours after North Korea offered to resume nuclear talks with the United States.

North Korean Vice Foreign Minister Choe Son-hui said in a statement that the North is willing to sit down with the US "at the time and place to be agreed late in September."

The overture represented a major change in its stance, which had been punctuated until recently by harsh criticism of the US and skepticism over the prospect of the resumption of talks.

Last month, North Korean Foreign Minister Ri Yong-ho called his US counterpart, Mike Pompeo, "the diehard toxin of the US diplomacy" for suggesting that all sanctions on the North would remain in place until the North's denuclearisation.

In a statement issued in late August, Vice Foreign Minister Choe said that expectations of dialogue with the US are "gradually disappearing."

Nuclear talks have been stalled since the no-deal summit between North Korean leader Kim and US President Donald Trump in February at which they failed to match Pyongyang's denuclearisation steps with Washington's concessions, such as sanctions relief.

Kim and Trump agreed to restart working-level talks within a few weeks when they met at the inter-Korean border in late June, but the talks have not been held amid heightened tensions amid the North's continued weapons tests.

Observers see North Korea's continued weapons tests as a way to strengthen its diplomatic hand and pressure the US to make more concessions when the two sides resume nuclear talks. —  YONHAP