This is the latest launch in the series of missiles test-fired by North Korea.

The Joint Chiefs of Staff (JCS) said it detected the North's launch at around 11 a.m. from its west coast. It did not specify the number of missiles, reported Yonhap news agency.

"While strengthening our monitoring and vigilance, our military has been closely coordinating with the United States to monitor additional signs of North Korea's provocations," the JCS said in a text message sent to reporters as quoted by the South Korea news agency.

Recently, North Korea fired the Hwasal-2 cruise missile off the west coast.