Indianapolis police are investigating the discovery of a woman's body in a creek on the northeast side of the city Sunday night.
The location, Fall Creek, is about 65 miles north of Bloomington, Ind., where missing Indiana University student Lauren Spierer was last seen on June 3.
Witnesses saw the body floating in the water amid some debris just before 7 p.m., according to local reports.
Police say they cannot provide even a basic description of the body, which was badly decomposed.
"We're not able to determine any type of identity, not even a race at this point, because the body is so decomposed," Kendale Adams, Indianapolis police public information officer, told ABC News affiliate WRTV. "Once we find out who she is, then we can backtrack and try to determine the events that led to her demise."
Bloomington police are in contact with the homicide detectives investigating the case, according to a spokeswoman, and the Marion County Coroner's Office will conduct an autopsy Tuesday morning.
Spierer disappeared a month ago after a night out with friends at Kilroy's Sports Bar in Bloomington. No arrests have been made in the case, but DNA samples have been gathered from several people thought to have been among the last to see her.
At a July 1 press conference, Spierer's parents urged their daughter's friends to share information that could help in the search for the missing 20-year-old.
"I want to say to the person who has Lauren or has harmed Lauren: Shame on you! In relationship to that, the person who knows this person who's not coming forward with the information, I beg you to come forward," Charlene Spierer said.