Federal investigators are looking into reports that some Jeeps can catch fire even when the ignition is off. The investigation covers more than 781,000 Jeep Wrangler and Gladiator vehicles that were made in the 2021, 2022 and 2023 model years, according to CBS. The National Highway Traffic Safety Administration is aware of nine incidents, including one in which a person was injured. No fatalities were reported. In most cases, the NHTSA said, the “suspected origin” was “at the passenger front side of the engine compartment.” “An ignition off vehicle fire can result in an increased risk of occup…