UPDATED Thursday (1/21) morning: I'm happy to report Danielle was located safely early Thursday morning.

The Linn County Sheriff's Department has issued an Operation QuickFind for a Linn-Mar High School student who hasn't been seen for more than 24 hours.

Danielle Tiegen was last seen at the high school in Marion Tuesday (1/19) morning at 11. Danielle is a 15 year-old white female. She's 5'1" and weighs 112 pounds with green eyes and brown hair. She is in good physical and mental condition and was last seen wearing a black and green sweatshirt, blue jeans, and black boots.

Please share this information and if you have any information on her whereabouts, or have seen her since 11 yesterday morning, please contact the Linn County Sheriff's Office at (319) 892-6100.