>

Thats usually what "missing" implies in extreme cases. Like that airplane crash recently. 6 people missing, they've probably suffered such horrific impacts they completely disintegrated and any pieces of them are beyond recognition
That's a tough loss for a country at war with its neighbour:

Interior Minister Denys Monastyrsky, responsible for the police and security inside Ukraine, would be the most senior Ukrainian official to die since the war began.
National police chief Ihor Klymenko said Interior Minister Denys Monastyrskyi had been killed alongside his first deputy, Yevheniy Yenin, and other officials in a helicopter belonging to the state emergency service.

Edit: included another quote >

This has been an extremely tough week for Ukraine. >

Something else happened? >

The Dnipro apartment bombing. >

40 killed and over 46 still missing. >

I don’t want to sound morbid, but I heard that at least some missing are presumed to be impossible to find as they have been destroyed… that’s incredibly sad on top of the already sad situation for anybody involved.