Police have blocked the entrance to the U.S. military's THAAD missile defense base in Seongju County to prevent residents and activists from entering the site.
This comes after 30 protesters confronted police officers at the base's entrance on Sunday evening,... leaving at least two with injuries following the clashes.
Demonstrators have been blocking the transport of construction materials and equipment into the THAAD site for months.
More clashes are expected Monday as the defense ministry has said more construction equipment will be brought in today,... after attempts to do so earlier this month failed.
Last year, the U.S. installed THAAD launchers at the site in a bid to counter North Korea's missile and nuclear threats.