WATERLOO, Iowa (AP) – Authorities say a woman whose body was found near Walker in Linn County was the mother of three girls who were the subjects of an Amber Alert. The girls were found in the Waterloo area about an hour after the alert was issued around 10:15 p.m. Wednesday by the Iowa Division of Criminal Investigation. Authorities have been looking for 36-year old Shaun Hogan, who is suspected of being their abductor. He should be considered dangerous. The investigation started around 6:30 a.m. Wednesday, after the woman’s body was found in the middle of a road. Authorities say the death was suspicious and that the woman had several injuries. The woman’s name hasn’t been released. Anyone with information about Shaun Hogan is asked to call Alex Murphy with DPS at 515-443-3014 or local law enforcement.