Friends and family members of missing nursing student Michelle Le will host a vigil this evening at Mount Eden Park in Hayward with the hope that she is still alive.
The vigil, which is scheduled to begin at 7:30 p.m., is a response to the Hayward Police Department's reclassification of Le's disappearance to a homicide Monday, organizers said.
Le, 26, has been missing since about 7 p.m. on May 27 from Kaiser Permanente Hayward Medical Center on Sleepy Hollow Avenue.
She told classmates she was planning to visit a friend in Reno after her rotation at the hospital. Le left during a break and never returned.
Investigators said they discovered compelling evidence that "points conclusively to homicide." The search has officially become "an effort of recovery," police said.
Sgt. Steve Brown said investigators wanted to remain hopeful that Le was alive, but "based on all the evidence, we have the grim possibility that Michelle is dead and we should prepare for the worst."
Le's family has expressed criticism for the Hayward Police Department regarding what they say is a lack of information being released.
Only certain details can be revealed while the case is still being investigated, Brown said.
Police said factors that led to the case's new classification include forensic evidence collected from Le's car and the area of the parking structure where it was located; information collected during interviews; examination of evidence gathered during service of search warrants; review of video footage from the garage and other locations; and examination of Le's cellphone records.
At least 25 people have been interviewed in connection with the case.
A flier gathering is expected to take place Sunday, but the details have not been confirmed.
Marc Klaas, father of 12-year-old Polly Klaas from Petaluma who was kidnapped and murdered in 1993, is expected to attend the event. Since his daughter's death, Klaas has been an advocate for child safety and founded the KlaasKids Foundation in Sausalito.
Le is 5 feet 6 inches tall with black hair and brown eyes.
Those with information about Le's disappearance are encouraged to call Hayward police at (510) 293-7000.