The four-door green Ford Excursion that Banu was driving was later found in Rancho Santa Margarita, authorities said.
More than a dozen members of the Orange County Sheriff’s Department's search and rescue team began to look for Banu at 6 a.m. Thursday at Melinda Road and Altisima, a wooded wilderness area, authorities said. By 2:30 p.m., they had not found her.
Banu is 5-feet-5 and weighs 130 pounds with brown eyes and short brown hair. She was wearing a purple shirt and blue jeans, authorities said.
Anyone with information is asked to call authorities at (714) 647-7055.
-- Ann M. Simmons