Mexican soldiers enter US , hold agent briefly

Four Mexican soldiers crossed into a remote area of Arizona and briefly held a U.S. Border Patrol agent at gunpoint before realizing where they were and returning to Mexico, U.S. authorities said.

Border Patrol spokeswoman Dove Crawford said the incident early Sunday on the Tohono O'odham Indian Reservation, about 85 miles (140 kilometers) southwest of Tucson, was in an area where the border likely was marked only with barbed wire.

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