The children are believed to be in danger and were taken by their non-custodial mother Heather Lynn Cassidy. She is a white female, 6 foot, 140 lbs with red hair and hazel eyes. They were last seen in Twin Falls, ID on May 3, 2015 and were seen in a silver 2001 Chrysler PT Cruiser bearing Montana license plate BFC602.
For more information, view poster at www.dojmt.gov.
Callen is a 6-year-old white male, 3-foot-8 with blond hair and green eyes. He has a birthmark on his lower back.
Sula is a 1-year-old white female with brown hair and hazel eyes.
If you have information on their whereabouts, please call Missoula Police Department at 406-552-6300.
Source: NBC Montana