The alarms in the base going off were a good clue.

He knew he couldn't have been discovered so quickly, unless they had far more cameras in the brig than even he thought. Thankfully, the mysterious scuffle left the hallways mostly clear, other than the odd 'con rushing past he barely had to dodge- cons running the wrong direction for them to know about his escape, at that.

Increasing his pace, Mirage made his way toward the nearest exit, trying to tune in the the Decepticon frequency- or an Autobot one, just in case.