The moment Atlas disappeared, the [Exploding Runes] he released as he left exploded, destroying the teleportation array entirely.
The man who caught him in the end was left without any leads. It truly would be a difficult task for him to track the mysterious bomber, but he didn't care.
That person was an enemy of Dusk, and Dusk was the Society that saved his life. Such a man would not be allowed to live under his watch.
"White mask…"
There were several people in the Tower known for their usage of white masks. It was too early to make an assumption about who that person was.
'Of those who use white masks, only three have grudges with Dusk.'
And, only two of them had the power to ever possibly challenge the influence.
Subtly, due to his own prejudice, the man eliminated Atlas from the suspect list.