North Korea has fired multiple unidentified ballistic missiles off its west coast, South Korea's military says, as the United States and South Korea begins annual joint military drills.
The missiles were fired towards the sea off the west coast just before 2pm, South Korea's Joint Chiefs of Staff (JCS) said in a text message sent to reporters on Monday.
The South Korean military had ramped up surveillance and vigilance, it said.
North Korean state media has criticised the annual joint military drills by the United States and South Korea that began on Monday, saying they would worsen the situation on the Korean peninsula.
The joint military exercises called Freedom Shield are due to run until March 20 and are aimed at strengthening readiness for threats such as North Korea, JCS has said previously.