UPDATE (4:25p) The teen has been found safe.
The Monroe County Sheriff's Office says deputies are searching for a missing Pittsford teenager, last seen walking out of Pittsford Mendon High School at 8:00 this morning.
Surveillance video picked up 16-year-old Hanalei Visiko-Knox leaving the school building. She hasn't been seen or heard from since.
Anyone with information about her location is asked to please call 911.