SEOUL, South Korea — North Korea fired several ballistic missiles into the sea on Monday, South Korea’s military said, hours after South Korean and U.S. troops kicked off their large annual combined drills, which the North views as an invasion rehearsal.

The South Korean military said the accident near the North Korean border occurred during training ahead of Freedom Shield, an annual U.S.-South Korea joint military exercise.

South Korea's suspension of some military drills after its fighter jets' accidental bombing of a civilian area may hinder its upcoming annual military training with the United States.

North Korea condemned an upcoming U.S.-South Korea joint military exercise Friday, saying that "counteraction is inevitable" and warning that the allies would "pay dearly."

South Korea’s military says it has suspended the training flights of air force aircraft and all live-fire drills after two fighter jets accidentally bombed a civilian area

South Korean and U.S. militaries halted all live-fire exercises across South Korea after South Korean jets mistakenly released bombs on a civilian area.

North Korea threatened Friday that South Korea and the United States will pay a "horrible" price for their joint military exercise slated for next week, saying the drills will soon bring a "storm" that deteriorates the security situation on the Korean Peninsula.