The South Korean military has stepped up monitoring of North Korea as it may carry out another provocation on Saturday to mark the anniversary of its founding.  

A Seoul government official says the military is maintaining an increased level of surveillance, which was activated after North Korea conducted its sixth nuclear test on September third. The North celebrates its 69th anniversary on September ninth.

The combined forces of South Korea and the United States have mobilized their surveillance assets to monitor the North, but no signs of an imminent provocation are known to have been detected. 

The military is particularly focused on the possible launch of a Hwasong-14 intercontinental ballistic missile (ICBM) or a Hwasong-12 intermediate range ballistic missile (IRBM). 

There is speculation that an upcoming UN vote on tougher sanctions against the North may prompt the regime to carry out additional provocations.