The Douglas County Sheriff's Office is asking for help finding out who killed a woman whose body was found near Interstate 25, and Crime Stoppers is offering a reward of up to $2,000.

Deputies found the body of 24-year-old Shelby Weatherly off the shoulder of southbound I-25 south of Castle Rock Saturday morning.

The sheriff's office specifically wants to hear from anyone who was traveling south on I-25 between Castle Rock and Monument between dusk on Sept. 29 and 10 a.m. on Sept. 30 and has video footage, or from anyone who saw any parked vehicles in that area.

"If we don't ask, we're not taking advantage of what ... could be a long shot," Steve Johnson, a chief deputy with the Douglas County Sheriff's Office, said. "But to dismiss it is not responsible on our part. It is a long shot, yeah, possibly could be, but we'll take it.

"We'll take it at this point."

Weatherly has been arrested multiple times by multiple agencies -- including on a felony drug charge just 21 days before her body was found.

"We don't care about the past, we don't care about any of those things, other than the fact that we just want to make sure that she knows," Johnson said. "We are her voice, we're doing everything we can to get justice for her."

Weatherly's last known address was in Littleton. She was known to frequent the Denver metro area and used the RTD light rail and other public transportation.

Anyone with information is asked to call Metro Denver Crime Stoppers at (720) 913-7867. Callers can remain anonymous. You can also text the number 274637, use the title DMCS, and enter your message. The Douglas County Sheriff's Office's Investigations Tip Line is (303) 660-7579.

Bloodhounds searched for evidence related to the case earlier this week, according to the Douglas County Sheriff's Office.

"No one deserved this fate, no one deserved to have this happen to them," Johnson said. "No family deserves to have this happen to them and have us show up at their door and break such horrific news to their family."