Kira wouldn't have paid it any mind right now, anyway. The recording does show the ghoul of a Japanese men, middle-aged, tired looking. Kira can be heard hesitating, taking a deep breath.
Then there is movement, the sound of a sword being pulled and then it can be heard slicing through flesh. The ghoul falls over and then the perspective changes, as if Kira has knelt down next to him. It.
Only now does he think to check the device and he's not surprised to see it switched on.]
Typical.
[Just a mutter, quiet, perhaps to hide more feeling than he'd normally show. Than the feed is switched off.]