During a large-scale search for the missing 16-year-old girl from Remshalden near Stuttgart, investigators discovered a body on Thursday.
The lifeless body was found in the Lenningen community, a police spokesman told the German Press Agency.
The spokesman did not want to comment on whether it was the 16-year-old.
There was also no information on the cause of death for the time being.
The teenager has been missing for more than a week.
She left her parents' house on January 24, but instead of going to her school, she took the train to Kirchheim unter Teck.
From there she boarded the Teckbahn in the direction of Lenningen.
After that, their trail was lost.
The police had previously set up a so-called anonymous tip system, with the help of which witnesses can report easily via the Internet.
The investigators are looking for witnesses - in particular, they are looking for people who, on the morning of January 24, rode the Teckbahn similar to the later missing person.
The Red Cross, a helicopter and the mountain rescue service have so far searched in vain for the 16-year-old on sometimes difficult terrain.
According to police information, a search operation between Kirchheim unter Teck and Oberlenningen was planned on Thursday.