The two missiles launched by North Korea last week are presumed to be the new short-range ballistic missiles unveiled during the regime's eighth party congress in January.
On Monday, during a National Assembly Intelligence Committee plenary session
Seoul's top intel agency said the latest missiles are believed to be an improved version of the previously tested KN-23 missile, with greater length and diameter.
The NIS also shared, the new missile is "theoretically" able to carry a small nuclear warhead.
On Thursday, Pyeongyang fired two projectiles into the East Sea from the town of Hamju, Hamgyeongnam-do Province.