Five were killed Saturday night in a rollover accident on Interstate 10, about 40 miles east of Tucson.
The Border Patrol says it was attempting to pull over a van when it flipped around 11 p.m. near State Route 83, the Arizona Department of Public Safety said.
The Border Patrol says 18 people were in the van.
He said seven were transported to hospitals by helicopter and 10 by ambulance.
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