The body was discovered in a brushy, remote area near Sunol Saturday afternoon by a volunteer working with a search team organized by Le's family.
Alameda County investigators sealed off access to the crime scene. The area has been previously searched by Hayward police.
"Today, one of the search party members did discover remains," said Lt. Roger Keener with the Hayward Police Department. "Right now that's all we know. There is nothing that indicates gender with the remains. The body is decomposed."
Authorities say it could take weeks to identify the remains if DNA testing is required. Investigators say they have not found any articles of clothing or other evidence that directly ties the body discovered to Le.
Alameda County Crime Lab technicians are on the scene to collect evidence.
Ten days ago, police arrested Giselle Esteban in connection with Le's murder. Le disappeared from the Hayward Kaiser hospital where she was a student at the end of May.