President Donald TrumpDonald TrumpMcConnell touts GOP healthcare plan ahead of Trump visit to Kentucky Trump: North Korea "acting very, very badly" Spicer: Trump didn't hear Merkel's handshake request MORE slammed North Korean dictator Kim Jong Un on Sunday for "acting very, very badly", following that country's recent missile activity.
The reported test came one day after U.S. Secretary of State Rex Tillerson warned that the U.S.is contemplating a pre-emptive military attack on North Korea and as he was traveling to Beijing.
Speaking in Seoul last week, Tillerson said that military action against North Korea was "on the table", indicating a break with the Obama administration's dissuasion strategy based on sanctions. "We are exploring a new range of diplomatic, security, economic measures".
And it is believed by experts and government officials to be working to develop nuclear-warhead missiles that could reach the United States.
The threatening release comes as the US and South Korea engage in military exercises.
The United Nations forbids North Korea from conducting long-range missile tests, but allows its satellite program for peaceful use. He also said the threat posed by the regime was increasing.
"The policy of strategic patience has ended", Tillerson said, according to The Korea Times.
"I think we share a common view and a sense that tensions on the peninsula are quite high right now and things have reached a rather unsafe level", Tillerson said.
North Korean officials said they will launch more Earth observation satellites and are building a space program that would include a moon launch in the next 10 years.
When asked about potential military action, Tillerson said the US would prefer to avoid an armed conflict with North Korea.