Pittsburgh mayor orders investigation into arrest of Cubs fan at PNC Park: report 10/12/2015 2:42 pm PDT Comments WGN via WGN: PITTSBURGH -- (WGN) -- Pittsburgh Mayor Bill Peduto has ordered an investigation into the arrest of a Chicago Cubs fan at PNC Park last week, KDKA reports. Video of the incident from Wednesday's wild-card game surfaced online over the weekend. WARNING: Video contains some graphic language. Viewer discretion advised. FULL STORY: Pittsburgh mayor orders investigation into arrest of Cubs fan at PNC Park: report - WGN Waiting for your permission to load facebook comments.