FBI wants to hear from possible victims of a child rapist on the Umatilla Indian Reservation
By Terry Murry on Thursday, December 11th, 2025 in Columbia Basin News Columbia Basin Top Stories
PORTLAND – The Federal Bureau of Investigation wants the public’s help in identifying additional victims of Aaron William Pizer, 41, who recently pleaded guilty to two counts of sexual abuse of a minor and one count of abusive sexual contact on the Umatilla Indian Reservation.
Pizer was taken into custody on May 30, 2024, by local authorities. Court documents indicate that between July 10, 2016 and July 9 2017; and on or between Aug. 22, 2019 and Aug. 21, 2020, Pizer sexually abused two minors under the age of 16 on the reservation. It is also on record that he engaged in sexual contact with a minor under the age of 16 on the reservation on April 19, 2024.
The FBI is working with the Umatilla Tribal Police Department and the Pendleton Police Department on the crimes Pizer committed. Investigators also believe Pizer may be responsible for assaulting or contacting additional victims both on and off the reservation.
Anyone who was a victim or may know a victim is asked to contact the FBI at 503-224-4181 or email CTUIR_tips@fbi.org. The FBI is legally mandated to identify victims of federal crimes. Those victims may be eligible for certain services and rights under federal and/or state law.
