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IDAHO FALLS -- An Idaho Falls man who police say injured his 2-month-old son by shaking him has been taken into custody on two counts of aggravated battery.

Police say 30-year-old Frederick Russell Kern was arrested Thursday.

Police say the child on Sept. 9 was taken to the Eastern Idaho Regional Medical Center and then flown to Primary Children's Medical Center in Salt Lake City.

Authorities say the child sustained injuries consistent with shaken-baby syndrome.

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