DPP was voted for the 'escape', he was murdered in the house though, not caught trying to escape?
Why?
Instead Biscan was seemingly caught trying to escape;
Across the path, barely visible in the shadows cast by a willow tree, lay what appeared to be a baseball bat used to end the life of this unfortunate Prisoner number 5. He's been murdered after wandering off for a minute.
Why the switch between the planned murder by the mafia or SK and the voted for 'escapee'?
The baseball bat murder seems to indicate a mafia style hit to me. DPP was due to escape, however, as with the death of 23, I think there is significance in how DPP died. We just need to find it.

I met my baseball bat mate on Saturday for a few beers.