Are you on the same floor as the electrical panel? If yes, it is unlikely that there would be wires UNLESS they are powering something in that section of wall.

Does the section of wall you’re working with have any lights, light switches or electrical outlets?

If no, you’re probably safe. Why would there be a wire there?

If you’re NOT on the same floor as the box, and there’s another floor further removed from the box relative to where you are, then there could conceivably be a wire powering something on that different floor. Example: box on floor 1, you on floor 2, device getting power on floor 3.