Not only did they release Ivan Guzman.
During the assault, 27 high ranking members of the Sinaloa Cartel escaped, or maybe released, from prison.
They can be seen walking out the front door and getting into private vehicles.
http://www.borderlandbeat.com/2019/10/culiacan-mayhem-son-of-el-azul-is-one.html
Borderland link,,,