Roundyâs warehouse shooting: Case closed, but new details revealed Waukesha officials comment on Roundyâs warehouse shooting investigation Waukesha officials offered comment on the investigation into the Roundy's warehouse shooting. No motive has been determined in the case. WAUKESHA, Wis. - Detectives at the Waukesha County Sheriff's Department revealed chilling new details from the March 16 Roundy's warehouse shooting now that the investigation is complete. The case was closed after an extensive investigation, officials said, with no motive determined. That investigation included 244 interviews and hours of surveillance video. "We opened up tiplines," said Captain Frank McElderry. "We opened up phone lines."