The remains of an Illinois woman who vanished five years ago after a night partying in Chicago have been found, police confirmed Tuesday, after her devastated family broke the news on social media.
Cheyann Klus was 22 years old when she was reported missing by her father after she failed to return home to Downers Grove - a village around 22 miles west of Chicago - in December 2017.
Her family posted on social media Sunday that her remains had been found. She was identified last week using dental records, the Cook County Sheriff's Office confirmed.
Her sister Mariah Klus posted on Facebook: 'As her immediate family [father, sisters, brothers, nephews] in mourning, we ask for privacy as we grieve the unbearable loss of a daughter, sister, aunt, and a human being.
Cheyann Klus was 22 years old when she was reported missing in December 2017 by her father after she failed to return home in December 2017
Twelve days after Klus' disappearance, a 911 call was made from her phone that pinged a cellphone tower at the Mallard Lake Forest Preserve (pictured), 20 miles from her boyfriend's house and 18 miles from her home
Mariah Klus broke the news about Cheyann's remains being found on Facebook
'We plan to hold a private memorial service for Cheyann amongst us, but we hope that everyone can find solace in knowing that she has been found and respectfully laid to rest.'
In 2017, investigators learned that Klus traveled to Chicago where she was last seen on the night of December 1 in the 2100 block of North Kilbourn in the Hermosa neighborhood.
Friends said she had left home to stay at her boyfriend Brian Biddle's house, where there was an 'all-day, all-night private party.'
Speaking to the Crime Watch Daily TV show in 2018, Cheyann's friend Chad Chanapai said: 'From what I understood, she took her laptop and maybe a few pieces of clothing, and that's about it'.
'[Biddle] said that she was being her normal self and that they were drinking and partying late into the night,' said Chanapai.
The following day Biddle, 38, reportedly woke up and she was gone. Biddle was never a suspect or person of interest in her disappearance - and cooperated with police.
Twelve days later, a 911 call was reportedly made from her phone that pinged a cellphone tower at the Mallard Lake Forest Preserve, 20 miles from her boyfriend's house and 18 miles from her home.
Cheyann Klus in photos from her social media profile. Her family posted on Facebook Sunday that her remains had been found. She was identified last week using dental records, the Cook County Sheriff's Office confirmed
The 948-acre park was searched on December 22, 2017 but without success, and plans were made to try again when the weather improved.
More than 100 personnel and dog teams scoured the area for a second time but Klus was still not found.
Cook County Sheriff's Office did not provide information about where or how Klus' remains were located.
In a statement, it said: 'The Sheriff's Office worked closely with the DuPage County Sheriff's Office and the FBI to successfully identify the remains of Cheyann Klus through dental records last week.
'The Sheriff's Office will continue to work with Chicago Police to investigate the circumstances of her death, but we are grateful to help bring some measure of closure to Klus' family.'
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