North Korea, angered by drills, fires short-range missiles off coast
The missiles hit the sea early on Monday morning after travelling for about 490 km (305 miles), according to South Korea's defence ministry.
The firing came on the day when the U.S.-South Korean military exercises were scheduled to begin. The secretive North denounces the drills as a preparation for war.
South Korean Defence Ministry spokesman Kim Min-seok said North Korea fired the missiles without designating any no-sail zones, which was regarded as a provocation.
"If North Korea takes provocative actions, our military will react firmly and strongly so North Korea will regret it in its bones," Kim told a news briefing.
Pyongyang has escalated its rhetoric against the drills, with a spokesman for its army general staff saying Washington and Seoul "should be dealt with only by merciless strikes".
North Korea frequently tests short-range missiles off its coast as part of military drills.
The United Nations has imposed sanctions banning North Korea from using ballistic missile technologies.
(Reporting by Ju-min Park; Editing by Paul Tait)