From the Prison QA thread Luke had this to say:
Sounds like we need to break it.LPressley.CIG@PickledAtRandom
Today at 1:20 pm
We have tried to ensure that players are unable to break in. There are a number of blockers along the path to prevent entry. However, there's every chance someone will find a way and if so we'll look to address how they did so. We really do not want players with weapons making it inside.