An autopsy showed no signs of foul play in the death of a University of Georgia student whose body was found Tuesday morning, the GBI said.

“It was not a homicide,” GBI spokeswoman Sherry Lang told The Atlanta Journal-Constitution on Tuesday night. “No one else caused her death.”

But investigators have not yet said how they believe Rebecca Elaine Greene died. The 22-year-old’s body was found Tuesday morning in a creek on The Plaza in west Athens, Athens-Clarke County police said in an emailed statement. Greene was last seen alive Monday at 5:30 p.m.

Greene's body was found by an officer searching the area Tuesday morning where her phone was last detected, police said. The location was not far from Indale Avenue, where Greene lived with her boyfriend, the Athens Banner-Herald reported.

Greene was supposed to be at the library and her boyfriend was to pick her up, according to the newspaper’s report. Greene later sent a text message to her boyfriend saying she would walk or take a bus, but by 11:25 p.m., hadn’t returned home, her boyfriend told police.

After an officer found Greene’s body Tuesday, it was transported to the GBI Crime Lab, where an autopsy was conducted to determine the cause of death. The University’s police department is also assisting with the investigation.

Greene was a chemistry major and philosophy minor at UGA and previously studied at Coastal Georgia Community College and Kennesaw State University, the university's student newspaper's website reported.

Investigators remained late Tuesday afternoon at the scene, where they were seen removing a bicycle and cell phone, believed to belong to Greene.

The results of routine toxicology tests could take several weeks.

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