The U.S. military and intelligence community is still analyzing test launch data to determine what type of missile was fired and how far it went.
It is not yet known whether the missiles were short, medium, or long-range, such as an intercontinental ballistic missile (ICBM).
The U.S. tracks all North Korean weapons tests via radar and satellites. U.S. satellites are able to detect heat signatures from a missile launch almost immediately.
Earlier in the day, South Korea’s joint leaders told reporters that North Korea had launched an unidentified projectile into the sea between the Korean peninsula and Japan.
The Japanese Coast Guard has warned ships that are on the lookout for falling debris.