At the beginning of season four , Theodore Bagwell ( T - Bag ) burns Sona to the ground .
Sucre , with the aid of Brad Bellick , former CO of Fox River , escapes Sona to continue their life on the run .
At the beginning of season four , Theodore Bagwell ( T - Bag ) burns Sona to the ground , and Sucre , with the aid of Brad Bellick , former CO of Fox River , escapes Sona to continue their life on the run .