North Korea threatens military action if South continues loudspeaker broadcasts

In a statement, the South's defense ministry said North Korea's armed forces sent a letter around 5 p.m., calling the South's propaganda broadcasts a "major challenge" to the North.

South Korea said it fired tens of artillery rounds toward North Korea on Thursday after the North fired a projectile toward a South Korean loudspeaker that had been blaring the propaganda.

(Reporting by Ju-min Park; Editing by Clarence Fernandez)