An arrest was made in a death investigation from December 2017, the Adams County Sheriff's Office said in a Thursday night news release.
Natalie Bollinger, 19, was reported missing out of Broomfield on Dec. 28 of last year and her body was found the next morning on the 11600 block of Riverdale Road in a wooded area.
Detectives with the Adams County Sheriff's Office arrested Joseph Michael Lopez, 22, on Thursday.
A mugshot will be made available on Friday.
There was a 26-hour period from the time she was last seen to the time her body was found that had baffled authorities for weeks.
Police had previously reported a person of interest in Bollinger's death. That isn't the same person who was ultimately arrested on Thursday.