The Florida Highway Patrol said Monday that conditions were clear enough to reopen Interstate 75 before a deadly pileup early Sunday, but Gov. Rick Scott is ordering an investigation.

BRADENTON

Minutes before two pileups killed 10 people on a highway shrouded in fog and thick smoke from a brush fire, the Florida Highway Patrol had reopened the always busy six-lane interstate after an earlier serious accident. A sergeant and lieutenant determined after about three hours that conditions had cleared enough for drivers, but visibility quickly became murky again, officials said Monday.