North Korea today accused the United States of flying spy aircraft into its airspace. Alleging repeated provocation by the US, North Korea warned that it will shoot down such surveillance flights.

North Korea's Defense Ministry said, provocative military actions conducted by the US several times were bringing the Korean peninsula closer to a nuclear conflict.

Condemning US plans to deploy strategic nuclear assets around the Korean peninsula, Pyongyang said that it poses a serious threat to peace and security in the region.

In April, the US announced its plan to send a US Navy nuclear-armed ballistic missile submarine to a South Korean port for the first time since the 1980s.

Meanwhile, South Korea dismissed North's claim of airspace violation as false. It said, the US conducts routine reconnaissance flights around the peninsula.