North and South Korea fire missiles off each other's coasts for first time

North and South Korea have both fired missiles landing in waters off each other's coasts for the first time.

Seoul retaliated on Wednesday three hours after Pyongyang launched a missile that landed less than 60km (37mi) off the South's city of Sokcho.

The South's military said this was an "unacceptable" breach of its territory.

It fired three air-to-ground missiles in response, which officials said landed a similar distance past the Northern Limit Line (NLL).

The line marks the rough midway-point in the sea between North and South Korea, but the North has never accepted the boundary.