15-year-old Allison Bayliss of Danville was last seen Monday morning riding to San Ramon Valley High School. Her bike was found near the Golden Gate Bridge. SF Appeal reports: "At about 4:45 a.m. today, Bayliss' family informed authorities that they had found Allison's bike in the Battery East parking lot, just to the east of the bridge on the San Francisco side." A search is now underway for the missing teen.

Bayliss is described as a white girl with "dirty-blonde hair and blue eyes," standing around 5 feet 8 inches tall and weighing 130 pounds. According to the Chronicle, "She was last seen wearing a red zippered hooded sweatshirt and blue jeans."

Anyone with information should call 911 immediately.