Warsaw says soldier died of ‘unexplained natural causes’ while Moscow claims on March 26 to have hit Chasiv Yar command center ( a six-story deep command bunker) secretively hosting senior NATO officials

According to the Russians, the bunker was hit by one or more Iskander missiles. Inside that command center were very senior NATO officers, some of whom were killed, according to Russian reports. One of them was Brigadier General Adam Marczak of the Polish army.

https://asiatimes.com/2024/03/a-polish-general-dies-deep-in-ukraine/