U.S. Strategic Command said it detected what it thought was the simultaneous launch of the missiles, CNN reported.
However, some analysts are saying that the missile tests are more than just for show, and are more than just a reaction to the THAAD announcement.
Its first successful artillery launch came in late July when it fired three ballistic missiles travelling from 500km-600km each.
In 2011, North Korea began an accelerated ballistic missile test program.
"We are once again deeply troubled by the latest test-firing of missiles by the Democratic People's Republic of Korea, one of which reportedly landed in Japan's exclusive economic zone", Stephane Dujarric told reporters, referring to North Korea by its official name.
While the worldwide community has been unanimous in the condemnation of the North's actions, top NK diplomat to the United States Han Son Ryol stated that the Communist regime's launch of the ballistic missiles is an act of self-defense.
And tensions on the divided Korean peninsula are also building up ahead of a large-scale South Korea-US military exercise that begins on August 22 and involves tens of thousands of troops.
Japan's Bessho responded that his country had not done anything to invite Wednesday's missile launch and said there was no justification for it which is why "we are strongly condemning the launch".
Alaska party spokesman: No plant in Sanders camp
However, said Lee, the time for disagreement has passed, and now the Democrats are more united than ever for the general election. Debbie Wasserman Schultz (D-Fla.) resigned as chair of the Democratic National Committee after the leak of internal DNC emails.
Japanese Prime Minister Shinzo Abe condemned the launch as a "grave threat" to Japan's security and an "unforgivable act of violence".
"It is the USA who threatens DPRK with missiles".
One of the missiles blew up immediately after launch while the other flew about 1,000 kilometers before plunging into the Sea of Japan, according to South Korean defense officials.
In March the United Nations imposed harsh new worldwide sanctions on Pyongyang for conducting its fourth nuclear test and another long-range rocket launch in violation of Security Council resolutions banning North Korea from developing nuclear and ballistic missile weapons.
The Terminal High Altitude Area Defense (THAAD) system, aimed at intercepting North Korea missiles, is set to be deployed near the rural area of Seongju, some 320 kilometres southeast of Seoul, by the end of next year.
Tensions between North Korea and South Korea are about to reach a climax.
This isn't: South Korea and Japan are already within striking distance.
While Jens Stoltenberg, general secretary of the NATO alliance of which Britain is a part, demanded North Korea pack it in.
After the launch of shorter-range Scud missiles last month, North Korean state media ran footage showing Kim Jong Un sitting in front of maps that put all of South Korea, right down to the southern port city of Busan, within range. Japan is not ready to attack North Korea, but it is no secret that Japan is fed up with North Korean threats.
- Who Is Being Blamed for Jordan & Aaron Rodgers' Family Feud?
- Obama to Host Singapore Prime Minister Lee Hsien Loong for State Visit
- China rejects accusations in Japan defense report
- Chris Sale's so-called 'apology' was anything but
- Rubio sticking with Trump despite misgivings over fight with Khans
- Doping investigator faces 'deluge of requests' on Russians
- Samsung expects newly launched Galaxy Note 7 to post handsome sales
- Samsung's New Jumbo Phone Unlocks With Iris Scanner
- Xbox One S 2TB Launch Edition Console Now Available in Stores
- Finn in frame for quick return to Test side