SEOUL, November 15. /TASS/. North Korea has designed a new type of solid-fuel engine for medium-range ballistic missiles, the North Korean Central News Agency (KCNA) reported on Wednesday.

"The missile industry of the DPRK has developed new-type high-thrust solid-fuel engines for intermediate-range ballistic missile again, which are of important strategic significance," KCNA said.

The first ground jet tests of the first-stage engine and the second-stage engine were held on November 11 and 14, respectively. Both tests "were very successful."

According to KCNA, the tests "provided a sure guarantee for reliably accelerating the development of the new-type IRBM system."