Afghanistan, Oct. 15 -- North Korea said Thursday it had test-fired two types of submarine-launched strategic cruise missiles off its east coast, describing the tests as part of efforts to strengthen naval capabilities and improve the reliability of its military deterrent.

The launches took place on Wednesday in waters off North Korea's eastern coast, according to the state-run Korean Central News Agency (KCNA). The agency said the tests were intended to assess the readiness of underwater combat systems and improve the navy's ability to carry out strategic missions. Senior military officials observed the launches, Reuters reported.

South Korea's Joint Chiefs of Staff said its military had monitored and tracked the launches using multiple ...