"U.S. Pacific Command detected and tracked what we assess were multiple North Korean ballistic missile launches", the statement said.
Japan's Chief Cabinet Secretary Yoshihide Suga is followed by reporters upon his arrival at the prime ministers official residence following a report of North Korea's missile launch, in Tokyo Saturday, Aug. 26, 2017. "The second missile launch at 12:07 p.m. appears to have blown up almost immediately".
On Wednesday, Kim ordered the production of more rocket engines and missile warheads during a visit to a chemical institute of the Academy of Defence Science, an agency that he fostered to develop its ballistic missile programme.
"We hope that this is the beginning of this signal that we've been looking for - that they are ready to restrain their level of tensions, they're ready to restrain their provocative acts and that perhaps we are seeing our pathway to sometime in the near future having some dialogue", Tillerson said.
North Korea has fired "several projectiles" into sea off its eastern coast, the South Korean military says.
Last month, it carried out two successful intercontinental ballistic missile (ICBM) launches, overseen by Mr Kim and apparently bringing the US into range for the first time.
According to the South Korean military, the missiles were launched from a site in the North Korean province of Gangwon and flew for about 250km (150 miles). That would put parts of the US mainland within reach and prompted heated exchanges that raised fears of a new conflict on the peninsula.
The White House said that U.S. President Donald Trump received the related briefing from the U.S. military. The border islands have occasionally seen military skirmishes between the rivals, including a North Korean artillery barrage on Yeonpyeong in 2010 that left two South Korean marines and two civilians dead.
There were eight Americans on board Ripley's flight to Pyongyang. The move led to North Korea trading threats and warnings with the United States.
While the new North Korean game has created a stir online, the production is not much different from other violent conflict games such as the Activision-made Call of Duty.
This image, provided by Yonhap News TV, represents a North Korea missile launch.
At the time of the tests, North Korean state media showed leader Kim Jong Un overseeing a special forces operation which simulated strikes on South Korean islands, Ripley said.
None of the missiles, launched from near Kittaeryong in the North, had posed a threat to either North America or the US Pacific territory of Guam, the spokesman added.