Phoenix ? A van carrying a magazine sales crew on a trip to the Grand Canyon overturned on a busy interstate north of Phoenix Sunday, killing two people and critically injuring five others, authorities said.

Police identified the driver as a 20-year-old man from Iowa and said the others in the van ranged in age from 18 to 20.

The driver and all eight passengers were thrown from the van when the driver overcorrected and the van rolled three times, ending up in the median, Arizona Department of Public Safety spokesman Frank Valenzuela said.

The driver, identified as John Michael Wilds, 20, of Kiron, Iowa, was in critical condition at a Phoenix area hospital Sunday night, Valenzuela said.

The passengers were from several states and were members of a sales crew for the magazine sales firm, Alliances Services Co., the Department of Public Safety said. The van had Illinois licenses plates.