(Associated Press) A father and son were charged Thursday with shooting a U.S. Immigration and Customs Enforcement special agent who was conducting surveillance in South Texas.

Pedro Alvarado, 41, and his 18-year-old son, Arnoldo Alvarado, are charged with assault of a federal officer and knowingly using and carrying a firearm during a violent crime. They face up to 20 years in prison if convicted on the assault charge and a minimum of 10 years and up to life in prison on the weapons count.

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