A badly decomposed body found floating in a creek is not that of missing Indiana University student Lauren Spierer, a coroner said Tuesday.

The Marion County coroner's office said the body of a woman recovered from an Indianapolis creek on Sunday does not match Spierer's dental records. 

The 20-year-old woman disappeared June 3 after a night out drinking with her friends. No suspects have been named in her disappearance, but police have identified several persons of interest. 

Police announced over the weekend that a female decomposed body was spotted Sunday floating in Fall Creek on the northeast side of Indianapolis, raising fears that it could belong to Spierer or another woman, missing 74-year-old great-grandmother Dorothy Head. 

But the coroner said Tuesday that the remains found belong to an African-American woman instead. No name has been released yet. 

Spierer, of Greenburgh, N.Y., was studying fashion merchandising and had just completed her sophomore year at the university in Bloomington, about 50 miles south of Indianapolis.

Hundreds of volunteers have since searched a 10-mile radius from where Spierer was last seen walking alone and barefoot to her apartment in downtown Bloomington. 

Jason "Jay" Rosenbaum -- the last person to admit having seen the young woman -- hasn't been forthcoming in providing information to the police, according to friends of Spierer's. 

Rosenbaum, a 21-year-old student at the university, is considered a "person of interest" in the case -- along with the young woman's boyfriend, Jesse Wolff, and other acquaintances of Spierer's.

The Associated Press contributed to this report.