The Bainbridge Island Police Department is searching for a missing 15-year-old girl and is turning to the public for help.

Audrey Anna Hickey, a Bainbridge High student, was last seen at the high school Monday morning. She walked away from the high school campus sometime after 10:15 a.m. Oct. 23 after signing into the school’s library.

She was reported missing late yesterday. Authorities believe she may be a danger to herself.

“If anyone has any information or has seen her, please call 911 — don’t hesitate,” said Bainbridge Police Chief Matthew Hamner.

“We are extremely concerned for her and want her found; and we want to be able to talk to her and reunite her with her family,” Hamner said.

Audrey is described as being 5-foot-3, 105 pounds, and has long, pale green hair.

She was last seen wearing a cream-colored shirt, black jacket and black pants.