Murder-suicide: Police had been called to home two weeks earlier

Hoquiam Police officers had responded to a domestic argument at the home of Mark and Mary Hinzman two weeks before the Nov. 12 murder-suicide that would leave both of them dead from stab wounds, a police report said Friday.

That incident, in which no arrests were made, “apparently related to an earlier … incident reported to the Grays Harbor Sheriff’s Office” in which Mark Hinzman, 53, had been accused of a “sex offense which had allegedly occurred 12-15 years earlier in Central Park,” the report said.

The report by Hoquiam Dective Sgt. Shane Krohn is the first public disclosure of some of the events that led up to the murder-suicide. A forensic pathologist concluded Mark Hinzman fatally stabbed Mary Hinzman in the kitchen of their Sumner Avenue home and then later killed himself with multiple self-inflicted stab wounds.

Krohn’s report said there was no note found at the scene to explain the murder-suicide, which was discovered by the couple’s 24-year-old son Eric Hinzman. who also lives in the home in the 3100 block of Sumner.

Although the death of Mark Hinzman has brought an end to the sex offense inquiry, the report does point out he had been interviewed by detectives after the initial report on Oct. 30, and the sex offense investigation was considered ongoing at the time Mark Hinzman killed his wife.

“It would be pure speculation as to Mark Hinzman’s motive in the murder of his wife,” said Hoquiam Police Chief Jeff Myers. “Unfortunately, often these sort of tragic incidents have no answers.”

The police department will meet with family members to answer any questions regarding the investigation, Myers added.