US official: ”North Korean troops killed in fighting with Ukrainian forces”

The report said, "A senior U.S. official confirmed information that 'several North Korean soldiers were killed in fighting between Ukrainian and North Korean forces.'"
The New York Times reported that it was unclear when the fighting between North Korean and Ukrainian forces occurred, but a senior U.S. official said, "There were significant
"A significant number of North Korean troops were killed," he said. The remarks came amid Ukrainian government claims that it had engaged in combat with North Korean troops.
Meanwhile, the US government has confirmed the "front line movement" of North Korean troops, but has refrained from commenting on whether they have "engaged in combat."