A body authorities believe is that of missing Nebraska woman Sydney Loofe has been found after the 24-year-old disappeared three weeks ago.
"We do believe that there is evidence of foul play", he told a news conference on Tuesday.
At a press conference Tuesday morning, Lincoln Police Chief Jeff Bliemeister and other law enforcement officers shared a few details about Monday's discovery of the body.
As of late Sunday night, two persons of interest were still in custody.
Bliemeister said investigators have a "strong belief" that the body found in an open area of Clay County is that of Loofe, but formal confirmation will be made in coming days, USA Today reports.
Susie Loofe taught in the district, and her husband, George, is the principal of Neligh-Oakdale High School.
Ms Boswell said she had dropped Ms Loofe off at a friend's house after their date and did not hear from her again.
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"We're continuing to speak with Aubrey Trail and we'll continue to do so as long as he's willing", Bliemeister said on Tuesday.
Multiple law enforcement agencies had been searching for Loofe, including the Federal Bureau of Investigation.
Police say Ms Loofe was last seen after apparently going on a date with Ms Boswell in Wilber, about 40 miles (64km) south of Lincoln.
Loofe's family did not say when or where her body was recovered. Friends said she had recently gone on two dates with a woman she met online named "Audrey". Last week, before they were arrested in Missouri, Boswell and Trail posted several videos on social media, with Boswell confirming she was with Loofe on the last night she was seen.
In a second video-posted Friday before the pair turned themselves into authorities following an arrest warrant accusing Trail of being a felon in possession of a firearm-Trail denied his and Boswell's involvement in Loofe's disappearance. There was the suspicious Snapchat, and Loofe's cellphone had last pinged a tower while it was at Boswell and Trail's home. The pair, who have warrants out on unrelated charges, were contacted by authorities last week after releasing a weird Facebook video, in which they said the police was smearing them by calling them persons of interest. "We're not trying to make you believe anything".
But prior to their arrests, Trail was posting several weird videos online. You've already crucified us on Facebook, ' he said. "We were planning to go to the casino that weekend", Boswell said. Both nights, she says she picked Loofe up at her home and the two drove around Lincoln smoking weed.
"I hope that Sydney is found very soon, she is a sweet, incredible girl", she said.