South Korea's Joint Chiefs of Staff says that North Korea has attempted to launch a missile from an eastern coastal city, but the launch appeared to end in failure.
The statement Sunday said it wasn't clear what kind of missile was involved.
NBC News reports that U.S. military is aware of the North Korea missile launch and the U.S. has initiated their missile launch conference call to assess options.
The launch comes as a day after North Korea celebrated its founding ruler's Kim Il Sung 105th birthday anniversary parade.
The parade, the annual highlight of North Korea's most important holiday, came amid growing international worries that North Korea may be preparing for its sixth nuclear test or a major missile launch, such as its first flight test of an ICBM capable of reaching U.S. shores.
But if the parade signaled a readiness for war, North Korea has long insisted that its goal is peace — and survival — with the growing arsenal a way to ensure that the government in Pyongyang is not easily overthrown.
North Korea launched a long-range rocket and conducted two nuclear tests last year, including its most powerful to date, and there have been a slew of shorter range missile firings.
North Korea's goal is a long-range nuclear missile that can strike the continental United States.