A badly decomposed woman's body was discovered in Fall Creek in North East Indianapolis on Sunday evening.

The owner of the body could be one of the two missing women: the Indiana University student Lauren Spierer or Noblesville great-grandmother Dorothy Mae Heard.

The body was found in the water near the 6500 block of East Fall Creek Parkway, just three miles from Spierer's school. At about 6.50pm passers-by called 911 to report the floating body. Paramedics pronounced the woman dead before the case was taken over by homicide detectives, reported the Daily Mail. Due to the decomposition, investigators could not figure out the victim's age, race or ethnicity or obvious cause of death, says the Indianapolis Star.

Police said Monday that positive identification from an autopsy would not come out until Tuesday at the earliest.

We've talked to them [investigators], but it has been very preliminary, Kendale Adams, a spokesman for the Indianapolis Metropolitan Police Department said. It's not that we're holding anything back. We just don't know who she is.

Lauren Spierer, an Indiana University student from Westchester County, New York, disappeared after drinking at a sports bar with friends at around 4:30 a.m. on Friday, June 3. She was last seen walking alone toward her apartment in downtown Bloomington. Spierer's purse and keys were found along the route to her friend's apartment, and she left her cell phone and shoes in the bar.

Spierer's parents, Robert and Charlene Spierer, traveled from their home in Greenburgh, N.Y., to Bloomington for the search. They described their daughter as a loving girl full of life. According to Spierer's mother Charlene Spierer, Lauren Spierer has a life-threatening heart condition called Long QT Syndrome and requires medical attention.

Right ahead of July 4th weekend, Spierer's parents pleaded her friends' parents for help in finding Spierer. As they held a press conference in Bloomington, Indiana, Rob Spierer broke down in tears as he urged them to help Lauren's friends 'find their moral compass' and come forward if they had any information, reported Daily Mail.

Dorothy Mae Heard, 74 from Noblesville, Indiana, has been missing since around 8 a.m. on June 13. According to police, Heard apparently took her purse, while nothing else appeared to be missing from her home, and her car was left in the driveway.

Two families are now waiting for the results from the full autopsy conducted today.