Richard Haase of Wisconsin charged with the 1992 double murder of Timothy Mumbrue and Tanna Togstad

Wisconsin police say they have solved a 30-year-old double homicide that had its roots in a long-simmering anger over a tragic snowmobile accident two decades earlier.

DNA linked foundry worker Tony Haase to the stabbing deaths of Timothy Mumbrue, his girlfriend Tanna Togstad and their dog in 1992, according to a criminal complaint.

The couple were found dead at their Royalton home, and for years police had been following leads, questioning possible suspects and collecting DNA and fingerprints from anyone interested.

None of the evidence matched until investigators began examining Haase, 51, and obtaining his DNA during a traffic stop on July 6, the complaint says.

After forensic testing showed Haase’s DNA was found at the crime scene, detectives took him in for questioning about the cold case — and he denied having any connection.

But throughout the interview, Haase began talking about snippets of memories he had while staying at Mumbrae and Togstad’s home, according to the complaint.

“Hasse stated that having these memories made him very nervous and frightened that he was involved,” the complaint reads.

Eventually, investigators say, Haase came in and revealed that in 1977, when Haase was 7, his father was killed while snowmobiling with Tanna Togstad’s father.

On the evening of March 20, 1992, he got drunk at local bars and “for some reason, started thinking about the accident that killed his father,” according to the complaint.

“These thoughts led him to go to Tanna Togstad’s house. Haase couldn’t say why he went there, but insisted not to hurt anyone.”

Haase claimed he got into a scuffle with Mumbrue, a foundry worker, and stabbed him in the chest, police said. Togstad, who worked at a cheese factory, screamed and he knocked her unconscious with a punch and then stabbed her in the chest as she began to wake up, the complaint says.

“When asked why he didn’t tell investigators right away, Haase replied, ‘I didn’t want it to sound like I planned it.’ Haase told investigators he didn’t know why he did it. At that point in the interview, Haase told investigators that when he finally saw the news report, he thought, ‘Holy shit, what have I done.'”

Haase faces first-degree first-degree murder charges and is being held in lieu of $2 million bail after a hearing attended by members of the victims’ families.

“Very happy,” Richard Togstad, Tanna’s brother, told WBAY of the arrest. “It was foreseeable for a long time.” Richard Haase of Wisconsin charged with the 1992 double murder of Timothy Mumbrue and Tanna Togstad


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