SEOUL - North Korea fired several short-range projectiles into the sea on Thursday, hours after the United Nations' Security Council voted to impose tough new sanctions on the isolated state and South Korean President Park Geun-hye vowed to "end tyranny" by the North's leader.
The firing escalated tensions on the Korean peninsula, which have been high since the North's January nuclear test and February long-range rocket launch, and set the South's military on a heightened alert.
South Korea's Defense Ministry said it was trying to determine if the projectiles, launched at 10am (1am GMT) from the North's east coast, were short-range missiles or artillery fire.