North Korea's test-firing of "projectiles" Friday morning was of a "new weapon," state-run media said Saturday, with leader Kim Jong Un urging his scientists to continue building weapons "to discourage any forces from daring to provoke us."

A report carried by the North's official Korean Central News Agency said Kim had observed the launch of "juche shells" — a weapon that experts said was a weapon akin to the type of missiles tested on Aug. 10. "Juche" refers to the North's national ideology of self-reliance.

The North Korean leader also expressed "great satisfaction" over his military's "mysterious and amazing success rates" in recent testing activity and vowed to build up "invincible military capabilities," the KCNA report said.