South Korea's president, Moon Jae-in, had been informed, Yonhap said.
Two of the missiles flew about 150 miles while the other one appears to have blown up nearly instantly.
The missile test capped yet another eventful week on the Korean peninsula, which began with the annual US-South Korea military exercises.
"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.
Japan's top government spokesman says there is no direct threat to Japan following North Korea's latest test-launch of three short-range missiles.
North Korea on Saturday fired unidentified projectiles toward the Sea of Japan, South Korea's defence ministry said, as a US-South Korea joint military exercise is under way.
The U.S. State Department did not immediately comment about the Saturday missile launches.
North Korean state-run media said the country's military could strike the U.S. at any time and that neither Guam, Hawaii nor the USA mainland could avoid the "merciless strike".
U11 Android Oreo update release time line revealed
However, a smartphone has to be registered to the Android Beta Program to be able to participate in the testing stage. According to the Android Oreo's official page, users will soon experience "2x the boot speed when powering up".
Cease-fire declared along Syrian-Lebanese border
Hezbollah sources in Lebanon said the Islamic State had "succumbed under fire and asked for negotiations". They have lost most of that territory since the joint offensive began at the start of August.
Yakuza 2 is getting an 'extreme' HD remake, too
Like its predecessor, Yakuza Kiwami 2 will feature completely remade visuals of its characters and the cities of Tokyo and Osaka. The game will be built on the latest iteration of the Dragon Engine which is now powering up Yakuza 6: The Song of Life .
Mass clashes in Myanmar
The army and the Myanmar's civilian government have vehemently deny allegations of widespread abuses including rapes and murders. Myanmar's government brands the 1.1 million-strong Rohingya population in the country as "illegal immigrants" from Bangladesh.
Samsung Heir Jailed, Found Guilty of Bribing Former President
The 49-year-old, arrested in February, is the son of the infamous Lee Kun-hee, the incapacitated chairman of the Samsung Group . The company is also accused of separately giving Choi millions of euros to fund her daughter's equestrian training in Germany.
Murray avoids potential Federer semi-final in US Open
Federer has already completed the Australian, Wimbledon and US Open treble three times in his career in 2004, 2006 and 2007. I'm going for it. "I'm totally honoured to have this particular event named after myself", Laver said.
How to Watch the 'Game of Thrones' Season 7 Finale
Once you've finished with the show for another year, simply make sure to cancel the NOW TV subscription. If you miss the first showing, HBO will air " The Dragon and the Wolf " again at Midnight Eastern.