SEOUL, South Korea — Yonhap news agency says North Korea has fired two short-range missiles. The apparent test fire comes just days after the country tested what it says were new precision-guided missiles.

South Korean Defense Ministry officials couldn't immediately confirm the report.

North Korea regularly test-fires missiles and artillery, both to refine its weapons and to express its anger over various developments in Seoul and Washington.

A series of missile and artillery tests earlier this year boosted tensions with rival South Korea.

North Korea has expressed anger in recent days with alleged South Korean artillery test-fires near a disputed maritime boundary in the Yellow Sea.