ADAMS COUNTY, Colo. (CBS4) – More remains of a woman missing since 2011 have been located.

On Friday a piece of Amy Ahonen’s skull was found in Clear Creek near Interstate 76 and Sheridan Boulevard in unincorporated Adams County.

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Amy Ahonen (credit: Denver Police Department)

Amy Ahonen (credit: Denver Police Department)

Flowers for Ahonen were placed near the spot where the Denver woman was last seen alive on July 8, 2011. Her family in Michigan is somewhat relieved that her bones were finally found late last year in Clear Creek.

“A little bit of closure, knowing that she’s at rest, but we still need to know what happened,” Ahonen’s sister Annette Ahonen said.

Authorities also don’t know what happened and Denver’s missing person’s case is now a death investigation.

CBS4’s Howard Nathan visited the place west of Golden where Ahonen’s black 2006 Jeep Liberty was found and noticed a few things. It’s been said she liked to hike, but as Nathan looked around the spot on Highway 6 where her Jeep was found, he noticed it’s not a place to hike because of the steep cliffs.

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Nathan also observed a steep and rock-filled drop into the creek. If she slipped, fell or was pushed, it would have been a nasty tumble.

“She is a very social person and everybody loved her,” Annette Ahonen said.

Two bones belonging to Ahonen were found in Clear Creek. One was a long bone near Marshall Street in Wheat Ridge. The other was found further east in unincorporated Adams County. Adams County says it found a piece of a human skull fragment in June of last year. Ahonen’s DNA matched her to the remains.

Ahonen’s family is now left with memories of the person she was.

“She’s the type person, she’d walk into a room and she’d just light up the room, and she had this smile with these awesome dimples,” her sister said.

The next step in the case is deciding which agency will lead the investigation. It was a missing person’s case for Denver, but with remains being found in Wheat Ridge the Jefferson County Sheriff’s Department could also lead the case.

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So far investigators have not ruled Ahonen’s death a homicide.