One person died Tuesday afternoon following a one-car rollover crash off state Route 78 in Vista, authorities said. A red or maroon sedan thought to be a Chevrolet Camaro or Pontiac Firebird crashed and rolled off eastbound SR-78 between Sycamore Avenue and Rancho Santa Fe Road about 1:30 p.m., according to the California Highway Patrol. Medics took one person from the car to Palomar Medical Center, but that person later died, Highway Patrol media information Officer Jim Bettencourt said. No details about the person who died were immediately available. Authorities issued a traffic alert for the eastbound lanes of the freeway, and traffic slogged in the area as Highway Patrol officers investigated the crash. All lanes were open to motorists by about 2 p.m., according to Bettencourt. A CHP log showed the traffic alert remained active a little before 4 p.m.