South Korea’s military says North Korea fired several cruise missiles into waters off its western coast. South Korea’s Joint Chiefs of Staff said Wednesday that the US and South Korean militaries were analysing the launches. It did not immediately confirm the number of missiles fired or their specific flight details.

The launches marked North Korea’s second known launch event of the year, following a Jan. 14 flight test-firing of the country’s first solid-fuel intermediate range ballistic missile, which reflected its efforts to advance its lineup of weapons targeting US military bases in Japan and Guam.