North Korean state-run media on Sunday slammed the U.S. for "double-dealing" by allegedly conducting what it said were "secret drills involving man-killing special units," a charge that came just a day after a trip to Pyongyang by the top U.S. diplomat was canceled.

The Rodong Sinmun, the official newspaper of North Korea's ruling Workers' Party, issued a scathing condemnation of what it said were recent "infiltration" drills that involved the navy, Green Berets, Delta Force and other special units of the U.S. military based in Okinawa Prefecture.

The U.S. military typically does not comment on such matters, and the Rodong Sinmun commentary, summarized in English by the official Korean Central News Agency, cited South Korean media reports about the drills, which it said took place late last month or early this month.