Arin M. Fox, 39, of Algonquin.

A woman who allegedly stabbed an elderly couple to death inside an Algonquin home and fled to Colorado has been extradited back to McHenry County and is being held on a $5 million bond.

Arin M. Fox, 39, of the 600 block of Red Coach Lane in Algonquin, was charged 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.

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

Officers made entry to the residence and found a male and female deceased inside the home.

The McHenry County Coroner’s Office identified the victims as Leonard J. Gilard, Jr, a 73-year-old resident of Algonquin, and Noreen S. Gilard, a 69-year-old resident of Algonquin.

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The Algonquin Police Department Investigations Division and the McHenry County Major Investigation Assistance Team (MIAT) responded to the scene.

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

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

Police quickly identified Fox in November as the suspect. Her relationship with the victims is unclear.

Fox fled to Colorado in the couple’s car after the murders occurred and she was later detained in the Douglas County, Colorado Detention Center.

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.

On Tuesday, Fox was extradited back to Illinois and remains held in the McHenry County jail. A judge set the woman’s bond at $5 million.