SEOUL, South Korea (AP) — North Korea launched two ballistic missiles into the sea on Sunday, South Korea said, the latest in a series of test-firings seen as expressions of anger over the North’s failure to win talks on receiving outside aid, and over U.S.-South Korean military drills.

The missiles, believed to be of Scud variations, were fired from the North Korean city of Kaesong near the border with the South and had a range of about 500 kilometers (311 miles), said a South Korean military official who spoke on condition of anonymity because of department rules.