The engaged couple found dead in a Shakopee home earlier this week were killed after sustaining serious head injuries.
Terry Weimer, 68, and his fiancee, 67-year-old Renee Ahrens, both suffered the injuries as a result of "blunt force trauma" (being struck by something), according to the Hennepin County Medical Examiner's reports.
The manner of death was listed as homicide.
Ahrens was a retired second-grade teacher, touching the lives of students and colleagues both during her time at Robbins Elementary School, the Eau Claire Leader-Telegram says.
Terry Weimer meanwhile had been a substitute teacher in Shakopee, KARE 11 reports.
Investigation turns to son
The couple were found lying next to each other in a "utility type room" just after midnight Tuesday, in a scene Shakopee Police Chief Jeff Tate described as "brutal."
The investigation quickly turned to Weimer's son, 40-year-old Adam Weimer, who police believed killed the couple.
He was located at a house in Waseca, and barricaded himself in, leading to an hourslong negotiation with police who tried to talk him into surrendering peacefully.
Around noon, he was found dead from a self-inflicted gunshot wound, according to investigators.
The Mankato Free Press looked at Adam Weimer's criminal history, starting with a domestic assault case in 1999, a particularly "dark" fight in 2010, and continued struggles with alcohol.
What led to the beating death of his father and father's fiance wasn't known. The Shakopee police chief said Tuesday the Bureau of Criminal Apprehension’s crime team will go through the entire house to try to figure out what happened.
Investigators will also try to determine why it happened by looking into the days leading up to the murder.