North Korean officials claimed Saturday that the country successfully tested another underwater nuclear-capable drone. 

The North Korea military reported testing a Haeil-2 underwater weapons system with nuclear capabilities this week. 

"The system will serve as an advantageous and prospective military potential of the armed forces of the DPRK essential for containing all evolving military actions of enemies, removing threats and defending the country," North Korean state media said in a communiqué. 

NORTH KOREA CUTS OFF ROUTINE CALLS WITH SOUTH KOREA AS TENSIONS RISE

The exercises reportedly began Tuesday and ran through Friday as the hermit kingdom aimed to prove the weapons capable of strategic deployment.

Due to the lack of a free press and diplomatic relations, it is not currently possible to evaluate North Korea officials' claims.

The country's Korean Central News Agency released a series of images claiming to show the new weapons systems being tested.

CONGRESSIONAL LEADERS INVITE SOUTH KOREAN PRESIDENT TO ADDRESS LAWMAKERS DURING STATE VISIT

Already-tense relations between the communist country and its neighbors have been stretched to their breaking point as the U.S. oversees joint military exercises in the region.

U.S. military officials hoped to dissuade North Korea from continuing nuclear testing via displays of military might in the Pacific, but those drills have only soured communications.

North Korea has stopped responding to regularly scheduled calls with South Korea as military tensions rise.

South Korean government officials announced Friday that its northern neighbor has failed to respond via the two-way military liaison line normally used twice a day. The silence continued Saturday.

A two-way phone line connects representatives of both North and South Korea for logistical and diplomatic purposes. It is normally used twice daily — once at 9 a.m. and again at 5 p.m.