Police investigate the homicide of Kelly Hedmark, 25, of Algonquin, (inset) at a residence in the 0-100 block of Beck Road in Lindenhurst Tuesday evening. | Background Photo: Willie Gillespie (@wgweather)

A man who is suspected of killing his girlfriend in Lindenhurst and then later dying in a vehicle crash has been identified as police continue investigating the case.

Kelly Hedmark, 25, of Algonquin, was seen leaving her residence on Yosemite Parkway in Algonquin last Sunday.

Her family told police that she was believed to be going to her boyfriend’s residence in the 0-100 block of Beck Road in Lindenhurst, according to Lake County Major Crime Task Force Spokesman Christopher Covelli.

Her boyfriend was identified as Kevin Williams, 25, of Lindenhurst.

Hedmark’s family learned on Monday that Williams had been involved in a head-on crash at Bates Road and Freeport Road near Rockton, which is in Winnebago County.

Williams, who was the driver of his vehicle, and driver of the second car in the crash, identified as Ronald Reed, 53, were both killed in the collision.

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However, Hedmark was not in her boyfriend’s vehicle, Covelli said.

The woman’s family reported Hedmark missing to the Algonquin Police Department on Monday.

Police investigate a homicide at a residence in the 0-100 block of Beck Road in Lindenhurst Tuesday evening. | Photo: Willie Gillespie (@wgweather)

Hedmark’s vehicle was found in the driveway of Williams’ home on Beck Road in Lindenhurst and Algonquin police officers obtained a search warrant to search the residence.

Algonquin police officers and Lindenhurst police officers entered the residence around 4 p.m. Tuesday and found Hedmark deceased.

The woman sustained significant blunt force trauma, Covelli said.

On Wednesday, Covelli told Lake and McHenry County Scanner that it appears Hedmark was beaten with some type of blunt force object.

“At this point, the primary suspect is the boyfriend, who died in the crash. There is no indication others are involved,” Covelli said.

The Lake County Coroner’s Office, which released Hedmark’s identity on Wednesday, confirmed during a preliminary autopsy that blunt force trauma to the head was the cause of death.

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An obituary for Hedmark said the woman is survived by her parents and her brother.

“Kelly went to Dundee Crown High School. She received an Associates Degree from Harper College and a Bachelor of Business Administration from The University of Wisconsin Whitewater. Kelly was the Vice President of the Circle K Club Volunteer Organization for two years,” her obituary said.

Family and friends of Hedmark will be gathering for her memorial visitation and funeral mass on Friday at St. Margaret Mary Catholic Church in Algonquin

The Lake County Major Crime Task Force, Lindenhurst Police Department and Algonquin Police Department continue to investigate the case.

The incident is considered isolated and there is no threat to the community, Covelli said.