MINNEAPOLIS (WCCO) — The Hennepin County Sheriff’s Department says there is no doubt that 30-year-old Ted Hoffstrom murdered Dr. Stephen Larson in his Orono home over the weekend.

Sources tell WCCO-TV that Larson, a 74-year-old OBGYN doctor, delivered Hoffstrom, who was born prematurely and suffered from mental and physical ailments. Hoffstrom allegedly blamed those issues on the delivery. Hoffstrom was believed to have long harbored hostility towards Larson.

At a news conference Monday afternoon, Hennepin County Sheriff Rich Stanek said Hoffstrom had recently been vocal in expressing those hostilities. Stanek would not say, however, if Larson was aware of those feelings.

“This is a tragedy of epic proportions for both families involved, as well as the community of Orono,” Stanek said. “We want to offer our condolences to family and friends affected by this double tragedy.”