No. When the cops said they "knew there were guns in the house" they meant that one of the people in the house had a concealed carry permit. The permit holder was not arrested and once he found out it was the cops that busted the door in, re-holstered his gun.
To my knowledge (living in Des Moines and following this) that is the only "gun" that was in the house.
Was this a daycare center, as someone claimed upthread?
Yes, I know that. It was a rhetorical question posed to the guy I was talking to who doesn’t seem to know anything about the story.