Police are passing out flyers in an effort to find a West High School student who has been missing since Monday.
Denver Police say 16-year-old Leticia Guerra-Montez is diabetic and needs insulin two or three times a day. Her mother says she's run away before, but not for this long.
The last time the teen ran away, she was treated at The Children's Hospital after being in critical condition from lack of insulin.
She's described as a Hispanic girl, 5 feet, 4 inches tall, weighing about 168 pounds with brown hair and brown eyes.
If you can help police find her, call 720-913-2000.