The question will resolve to "Yes" if a credible news media story emerges of another country using such technology. For context, here's the article on Ukraine's AI-controlled "killer robot" drones, so a similar article would be sufficient https://www.newscientist.com/article/2397389-ukrainian-ai-attack-drones-may-be-killing-without-human-oversight/

Ukrainian AI attack drones may be killing without human oversight

Ukraine is using drones equipped with artificial intelligence that can identify and attack targets without any human control, in the first battlefield use of autonomous weapons or "killer robots"

Update based on question below:

If there's a credible news media story discussing a country using AI-powered autonomous robots to kill (without human intervention), such as firing missiles to kill enemy combatants, that would qualify.