The leader of the Democratic People's Republic of Korea DPRK, Kim Jong Un, oversaw a successful ground jet test of a solid-fuel engine for a new-type intermediate-range hypersonic missile, state media KCNA reported on Wednesday.

The new missile "is of another strategic value," the outlet said.

Read more: DPRK leader drives new tank during mock battle

According to KCNA, Kim Jong Un said that the "military strategic value of this weapon system is seen as important as ICBMs."

Pyongyang had reportedly carried out a series of live-fire tests since last year for a new type of solid fuel engine for intermediate-range ballistic missiles (IRBMs).

The latest test round came just two days after the DPRK carried out another exercise overseen by Kim, which included tests on "newly-equipped super-large" multiple rocket launchers. The DPRK confirmed that the weapon can also be equipped with a tactical nuclear warhead.

Kim said the multiple rocket launcher would help his country "block and suppress the possibility of war with the constant perfect preparedness to collapse the capital of the enemy," according to KCNA.

Washington and Seoul wrapped up one of their major annual joint military training exercises last week, which prompted tit-for-tat drills from Pyongyang.

Read more: DPRK on heightened war readiness amid US-South Korea drills

The drills included "clearing operations" inside DPRK's "key facilities" in case of an attack by Pyongyang, Seoul's military stated.

Pyongyang warned earlier that the US and South Korea would pay a "dear price" over their military exercises, and later announced that Kim had guided an artillery unit it says was capable of striking the South Korean capital.

Meanwhile, Kim oversaw last week's paratroop drills aimed at showing his soldiers' ability to occupy an "enemy region at a stroke."