Multiple ballistic missiles fired from eastern Sinpo area in seventh such test this year.

North Korea has launched multiple ballistic missiles towards the sea off its eastern coast, according to South Korea and Japan.

The incident on Sunday marked North Korea’s seventh ⁠ballistic missile launch this year and its fourth in April.

The missiles were fired near the city of Sinpo on North Korea’s east coast at about 6:10am on Sunday (21:10 GMT, Saturday), South Korea’s military said in a statement. It added that South Korea had bolstered its surveillance posture and was closely exchanging information with the United States and Japan.

Japan’s ⁠government posted on social media that the ballistic missiles were believed to have fallen near the east coast of the Korean Peninsula. No incursion into Japan’s exclusive economic zone was confirmed.

South Korea’s presidential office said it has held an emergency security meeting, according to media reports.

Such tests violate United Nations Security Council resolutions against North Korea’s missile programme. The diplomatically isolated country rejects the UN ban and says it infringes on its sovereign right to self-defence.

The launches come as China and the US prepare for a summit in mid-May, ⁠in which Chinese President ⁠Xi Jinping and his US counterpart, Donald Trump, are expected to discuss North Korea.

North Korea has made “very serious” advances in its ability to turn out nuclear weapons, with the probable addition of a new uranium enrichment facility, ‌International Atomic Energy Agency chief Rafael Grossi said on Wednesday.

Late last month, North Korean leader Kim Jong Un said his country’s status as a nuclear-armed ‌state ‌was irreversible and that expanding a “self-defensive nuclear deterrent” was essential to national security.