Police investigating the disappearance of west-central Minnesota teenager Laura Ann Schwendemann do not believe she went missing "voluntarily."
Douglas County Sheriff's Office posted its latest update Wednesday afternoon regarding the disappearance of the Starbuck teenager, who was last seen at a Holiday gas station in Alexandria the night of Oct. 14.
"Investigators do not believe Schwendemann left voluntarily," the update said.
Investigators are now seeking information about another vehicle, a 1997 black Geo Prism which is described as having a "loud exhaust."
They want to hear from anyone who heard a loud exhaust or saw the car in Douglas or Pope counties between 9:30 p.m. on Oct. 14 and 10:30 a.m. on Oct. 15.
Investigators say they don't believe there is an ongoing risk to public safety.
The 18-year-old was last seen at the gas station on 50th Ave. around 9:30 p.m.
According to her Facebook profile, she is a student at the University of Minnesota, Morris.
On Saturday, authorities said they have “specific interest” in the townships of Holmes City and Solem, in Douglas County, as well as Nora and Ben Wade townships in Pope County.
And on Monday, the sheriff's offices said they are trying to locate a "blue-colored residence with a statue approximately 3 feet tall near the end of the driveway," with the statue "described as having blue clothing and a red hat."