Released: Menasha police issue final report on Trestle Trail bridge shooting

MENASHA -- Menasha police released a report on Thursday, June 11th on the shooting that resulted in four deaths on a recreational bridge. The report says the shooter had a long history of depression, alcohol dependency, suicidal and sometimes homicidal thoughts.

Investigators say Sergio Valencia del Toro was intoxicated when he fatally shot two men and a child on the bridge before taking his own life on May 3rd.

The report cites del Toro's behavioral health history which showed that while in the Air Force he had either sought or had been ordered to a number of behavioral health interventions. The report says in October 2010, he had gone to an emergency walk-in clinic because he was concerned about the intensity of his mood swings.

Authorities say del Toro killed Jon Stoffel, his 11-year-old daughter Olivia and Adam Bentdahl. Stoffel' wife, Erin, was injured.



The report also notes a surveillance camera located within a pavilion at Fritse Park captured some of what happened on May 3rd. The report says:

Police interviewed Erin Stoffel three days after the shooting -- while she was recovering. The report indicates she told investigators she was walking on the bridge with her family when "she heard a loud bang; however, didn't recognize what it was." Her husband, Jon, and Olivia were behind her at the time. The report states when Erin Stoffel turned around, she saw a man had something in his hand -- "he said something to the effect of, 'you didn't see anything," and almost simultaneously brought the item that he had in his hand out of the bag and at that point he started to shoot all of them." Erin Stoffel told police "she remembers both she and Jon were shot almost simultaneously." She also told police "that her husband Jon said, 'May God forgive you' to the shooter."

"It's still our belief that this was completely a random act," said Tim Styka, Menasha Police Chief.

Erin Stoffel was released from the hospital on Friday, May 22nd. Prior to that release, she issued the following statement from her surgeon at Theda Clark Medical Center: