Four Mexican soldiers crossed into Arizona and held a U.S. Border Patrol agent at gunpoint before realizing where they were and returning to Mexico, federal authorities said Wednesday.
The confrontation occurred early Sunday on the Tohono O'odham Indian Reservation, about 85 miles southwest of Tucson, in an area fenced only with barbed wire, said Dove Crawford, a spokeswoman for the Border Patrol.
Mexican soldiers enter Arizona, hold agent briefly
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