Arin M. Fox, 40, of Algonquin.

A woman who allegedly stabbed an elderly couple to death inside their Algonquin home last year has been ruled mentally unfit for trial.

Arin M. Fox, 40, of the 600 block of Red Coach Lane in Algonquin, was charged in November 2020 with four counts of first-degree murder, aggravated battery to a victim older than 60, domestic battery, and two counts of unlawful possession of a stolen vehicle.

Fox appeared in court on Wednesday following an evaluation of competency report completed by two doctors.

The two forensic psychology experts said that Fox’s mental health symptoms are “so severe that they are interfering with her adjudicative competence and her ability to communicate in a rational manner.”

Fox has a “long history” of mental illness and medication non-compliance, and has been diagnosed with schizophrenia and bipolar disorder, court documents said.

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One of the experts said Fox may be restored to fitness within 60 days of inpatient psychiatric medication and psychoeducational services.

McHenry County Judge Robert Wilbrandt agreed with the doctors’ findings and ruled Fox unfit to stand trial.

Wilbrandt ordered the woman transported to the custody of the Illinois Department of Human Services to be treated at a secure inpatient facility.

Fox was arrested in Douglas County, Colorado in November 2020 after police say she fled from Illinois following the murders of Leonard J. Gilard, Jr, 73, and Noreen S. Gilard, 69, both residents of Algonquin.

The Algonquin Police Department was called around 6:40 p.m. November 8, 2020, to the 600 block of Red Coach Lane in Algonquin for a well-being check.

Officers made entry to the residence and found Leonard J. Gilard and Noreen S. Gilard deceased.

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Algonquin Deputy Police Chief Ryan Markham said at the time that the victims’ wounds were consistent with that of a stabbing. No firearm was used in the crime.

Markham said that the incident was believed to be domestic violence-related.

Fox fled to Colorado in the couple’s car after the murders occurred and she was later taken into custody.

The McHenry County State’s Attorney’s Office said that Fox was receiving psychiatric treatment at least two months before her arrest, the Northwest Herald reported.