PONTIAC (WWJ/AP) – Investigators believe a 31-year-old woman fatally stabbed her father before dying of a possible drug overdose in Pontiac.

Their bodies were discovered Wednesday inside a home on Central Avenue, near Woodward Avenue and South Boulevard, after 57-year-old Walter Heil failed to report to work. It was the second check at the Pontiac home by Oakland County Sheriff’s deputies.

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Deputies first went to the home at 8:14 a.m. after being contacted by out-of-state relatives who requested a welfare check. Police say Heil’s 54-year-old wife answered the door and said everything was fine.

Later, at 1:18 p.m., a second caller requested a welfare check, saying Heil never made it to work. Deputies went back and made entry to the home, where they found Heil’s wife, who is physically disabled and “appears to have a mental illness,” sitting on the floor, according to police.

Deputies continued checking the home and found Heil’s 31-year-old daughter Katty Ann obviously deceased on the second floor. Police say her body had no signs of trauma, but it was located near hypodermic needles and drug paraphernalia.

Deputies then checked the basement where they found Heil dead with multiple stab wounds to his upper body.

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Investigators spoke with Heil’s wife, who apparently didn’t understand what was happening during the first visit by deputies, and she said that her husband and daughter had a physical altercation.

“Preliminary investigation indicates the daughter stabbed her father and then proceeded to take a quantity of drugs which may have led to her death,” police said in a statement.

Heil’s cause of death was ruled a homicide caused by multiple stab wounds. His daughter’s cause of death is pending toxicology results.

An investigation is ongoing.

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