A Warm Springs officer was hospitalized with broken bones, and a second child from the fleeing car was hospitalized in the accident late Wednesday.
A deputy stopped a vehicle on U.S. 26 that witnesses earlier had reported fleeing a burglary where shots were fired, according to the Jefferson County sheriff's office. As the deputy walked up to the vehicle, it pulled away into the dark and was quickly out of sight, the sheriff's office reported.
The deputy gave chase and within a mile and a half came upon the crash, which was just east of the Warm Springs Indian Reservation about 100 miles southeast of Portland.
The sheriff's office didn't release information about the burglary report and didn't identify the victims Thursday.
The State Police said its investigation showed the fleeing vehicle went out of control and slid sideways into the oncoming lane, smashing into the other car.