The FBI says dozens of calls have come into an automated tip line set up to help find missing Montana teacher Sherry Arnold.
Agency spokeswoman Deborah Bertram says authorities are reviewing all tips that have come in so far. She urged people to continue calling with any information in the case.
The FBI on Thursday issued a missing person poster for Arnold, a 43-year-old math teacher from the oil boom town of Sidney near the North Dakota border. Authorities are investigating the possibility Arnold was abducted.
She's been missing since Saturday morning when she left her house for a run. The only clue to her disappearance that's been publicly released is that one of Arnold's shoes was found along her running route.