The Florida Highway Patrol say a Friday morning traffic crash on Interstate 10 near mile marker 43 in Holt in Okaloosa County resulted in two fatalities. Troopers say five people were inside a car that went off the road and hit a tree. The driver, 19-year-old Carlos Alvarez-Manco of Katy, Texas, and an unidentified passenger were killed. Two other passengers were seriously injured and another passenger had minor injuries. All surviving passengers were taken to Fort Walton Beach Medical Center.