South Korea's military says the North launched two short-range ballistic missiles into the sea.
The Japanese Coast Guard confirmed that missiles had landed just outside its territorial waters.
South Korea's Joint Chief of Staff said the country was monitoring the situation in case there are additional launches, adding that the actions were "extremely inappropriate" at a time when the world was dealing with the Covid-19 pandemic.
Earlier in March, North Korea launched multiple missiles as part of firing drills.


Five dead as Mexican plane crashes off Texas coast
Two killed in underground explosion at Polish coal mine
Netanyahu to discuss Iran, next phase of Gaza plan with Trump
US President unveils 'Trump-class' battleships
Cambodia, Thailand to hold talks on resuming Trump's truce