Military/terrorist group procures communication devices to coordinate military operations. Explosive is sized to injure the holder, not bystanders - per CCTV videos, eg:
https://www.theguardian.com/world/video/2024/sep/18/cctv-cap...
Hard to get more precise/targeted than that!
In contrast to:
https://www.youtube.com/watch?v=JEoK6oihqhs