Police provided additional details Friday about the gunfire that killed two people and injured two others Wednesday at the Valley Transit Center, but many questions remain unanswered.
Police, firefighters and paramedics responded to the transit center to provide aid to Ruben Houston III, a 47-year-old Wausau man who was arriving on a bus from outside the area and reportedly was having a seizure.
Medical care was provided to Houston on the bus. He subsequently left the bus and was encouraged to seek additional medical care. Houston started walking toward the nearby Appleton Public Library when "the incident escalated into shots being fired," according to a statement by Police Chief Todd Thomas.
"At some point (Houston) displayed a handgun, and shots were exchanged between him and our officers," Thomas said at a press conference Thursday.
Two Appleton police officers — Sgt. Christopher Biese and Paul Christensen — fired "in response to the threat," Thomas said Friday.