North Korea fired 25 short-range missiles into the East Sea on Sunday evening, the Defense Ministry here said.
It was the fifth time since Feb. 21 that the North fired a salvo of missiles or other projectiles into the ocean as a form of protest against massive South-Korea-U.S. joint military exercises.
A Defense Ministry official said the missiles were "Free Rocket Over Ground" types and "flew around 70 km before falling into the ocean." FROGs are outdated missiles North Korea apparently brought in from the Soviet Union in the 1970s.
For the first time this year North Korea has given no warning signs of imminent missile launches to avoid collisions with civilian ships or aircraft.