Police are searching for missing nursing student Michelle Hoang Thi Le, who disappeared while on a break from making clinical rounds at a hospital in Hayward, Calif.
Le, 26, is a student at Samuel Merritt University in Oakland, Calif. She disappeared around 7 p.m. May 27.
"The entire Samuel Merritt University community is deeply concerned about the disappearance of our nursing student Michelle Le," said Elizabeth Valente, a spokeswoman for Samuel Merritt University. "She was last seen Friday evening after she did not return to the hospital from the parking garage at the Kaiser Permanente Hayward Medical Center."
Le's car was found a few blocks from the hospital on Saturday, according to a statement by the Hayward Police Department. Le had her car keys and cell phone with her but has not responded to calls.
Authorities have traced her cell phone signal to Oakland, Union City and Fremont, ABC affiliate KGO reported, but can no longer pick it up, KGO reported.
"The reality is, it's a pretty large area," Hayward Police Lt. Roger Keener told KGO. "We've had the helicopter fly over the area. ... We haven't found anything at all that leads us [in] one direction or another, that tells us this is a foul play incident or anything," and they are still Le's disappearance as a missing persons case.
Le reportedly told some classmates that she had plans to go to Reno, Nev., Friday night, police said.
Le does not have any medical or psychiatric conditions that could account for her disappearance, police said.
Anyone with information that may help locate Le should contact Hayward Police Department at 510-293-7000.
ABC Affiliate KGO contributed to this report.