The Alameda County Coroner's Office confirmed Monday evening that remains found in the Niles Canyon area near Fremont on Saturday belonged to missing nursing student Michelle Le.

Le disappeared May 27 from the Kaiser Permanente Medical Center in Hayward. She left the medical center about 7 p.m., telling a classmate she was going to go to her car during a break, Hayward police Lt. Roger Keener said.

She never returned. Her instructor later went to the parking garage looking for her and called police to report her disappearance.

Le's car was found the next morning parked on Ponderosa Court, about half a mile from the medical center.

Investigators found bloodstains in the vehicle, and it was later determined that the blood was Le's, Keener said.

On Saturday, volunteers found a body in an unincorporated area between Pleasanton and Sunol where authorities believe Le had been, based on cellphone records.

Giselle Esteban, 27, taken into custody on the morning of Sept. 7 as she was leaving her Union City home, She was arrested on suspicion of murder.

Keener also said footage from security cameras at the Kaiser Permanente parking structure showed that Esteban was present around the time of Le's disappearance.

Esteban delayed entering a plea during a hearing Monday and is scheduled to return to court Sept. 28 to possibly enter a plea.

Le's family Monday thanked Hayward Police, the KlaasKids Foundation, Team Amber Search and Rescue and other agencies that had taken part in the nearly four-month-long search.

"We ask for privacy and respect during this difficult time, as we are grieving and preparing a memorial service for her -- a proper goodbye," family spokeswoman Krystine Dinh said in a news release.

"Please continue praying for and supporting Michelle as our family begins the journey to ensure justice in her honor," Dinh said