North Korean leader Kim Jong Un has overseen a long-range artillery drill, a report by the state media KCNA said.
"The men of long-range artillery pieces on the front participating in the drill proudly demonstrated the accurate marksmanship which they had improved in their training," the Korean Central News Agency (KCNA) reported on Tuesday.
That came after South Korea reported two launches off the east coast into the sea on Monday.
However, the KCNA report made no mention of whether missiles were involved.
The South Korean military had said that North Korea fired two unidentified projectiles eastward into the sea.
The two missiles were fired from the Wonsan area on North Korea’s east coast, the South’s Joint Chiefs of Staff said in a statement on Monday.
“The military is monitoring for additional launches and maintaining readiness,” the statement added.
The development comes over two months after Pyongyang declared an end to a moratorium on its missile tests.
At a party meeting in late December last year, North Korean leader Kim Jong-un declared that Pyongyang no longer considered itself bound by an agreement with the US because Washington was not upholding its end of the bargain.