South Korea denied a report on Friday that it would send artillery shells to help Ukraine against Russia, days after North Korea also denied it was supplying weapons to the other side.

The Wall Street Journal (WSJ), citing unnamed U.S. officials, said Seoul would provide artillery shells to the U.S. for the explicit purpose of repelling Russian invaders. The U.S. has consistently accused the DPRK of supplying artillery to the Russian army, a charge both Pyongyang and Moscow reject.