Some more details have come out.
Cuffed in front, shot and wounded his transport deputy after taking his sidearm.
Shot and killed two bailiffs.
Other bailiffs came running and won the resulting shootout.
A female bystander was shot. Since she was shot with a duty gun, and the perp had a duty gun, people seem to be assuming he shot her but I don't think anything concrete has been said about who fired that shot.
MadFrothingAtTheMouthMommy Shannon Watts blames the NRA for the ready availability of handguns hanging from duty belts. No, seriously, she really did. Don't you just love it when the other side goes out of their way to discredit themselves?
http://www.thetruthaboutguns.com/2016/07/daniel-zimmerman/shannon-watts-nra-blame-michigan-prisoner-gun-grab/