The incident involving Schumacher began shortly after 9 p.m. June 30, when a neighbor called 911 to report that a man — identified after the shooting as Schumacher — was chest-deep in Lake Monona near the 1300 block of Morrison Street and behaving strangely, including talking to himself and slapping the water.

The caller then saw Schumacher walk up onto the shore behind his neighbor’s lakefront home and break a window by throwing a rock through it, causing the residents to run outside and also call 911. Schumacher entered the home through the broken window, Ozanne said.

In that call, one of the homeowners reported that the lower level of their home had been broken into, that the caller and the spouse had fled the home, and that a male voice could be heard inside the home, yelling incoherently and apparently smashing windows.

The first 911 caller, who stayed on the line with the dispatcher providing updates while officers were en route, also reported seeing a man inside the home holding a shovel, and said he was talking, swearing and “smashing stuff” inside the home, according to the case file synopsis.

Rivera was the first officer to arrive at the home, where he was told by one of the homeowners that someone was inside the residence, according to the synopsis.