Shot 06/03/2011.## HAYWARD, Calif — A vigil has been planned for Friday night for a nursing student who was last seen at a Hayward hospital a week ago The vigil was scheduled 7 p.m. to 9 p.m. on Ponderosa Court in Hayward, which is where 26-year-old Michelle Le’s Honda SUV was found after she disappeared.  The family is planning to announce that they will increase the reward for information leading to the safe return of Le. The location of the vigil is about a half-mile from where Le, who was in a nursing program at Samuel Merritt University in Oakland, was last seen at the Kaiser Permanente Hayward Medical Center at 27303 Sleepy Hollow Ave. South at about 7 p.m. on May 27. Le, an Oakland resident, attended San Francisco State University before enrolling at Samuel Merritt's Accelerated Bachelor of Science in Nursing program in January, according to a university spokeswoman. Hayward police spokesman Lt. Roger Keener said Friday that police are continuing to investigate leads and have identified several persons of interest but haven't made any arrests. Keener said one of the persons of interest is Giselle Esteban, who had a search warrant served on her Union City residence and her vehicle. He said investigators are exploring the possibility that Esteban might bear a grudge against Le for stealing her high school boyfriend many years ago. Esteban was questioned briefly and released but remains a person of interest, Keener said. He said he won't identify the other persons of interest and the only reason he is confirming that Esteban was questioned is that she contacted the news media on her own. On May 27, Le told classmates she was planning to drive to Reno after her rotation at the Kaiser facility in Hayward. She left during a break and did not return, according to Keener. Le is described as 5 feet 6 inches tall with black hair and brown eyes.##