A pair of vehicle fires reported Friday morning remained under investigation, said Vicksburg Fire Chief Charles Atkins, and arson had not been confirmed as the cause.

“We’re still investigating,” Atkins said Friday evening. Vicksburg police are involved, he said.

The first fire was reported around 6 a.m. at 1007 First North St., Atkins said, and involved an SUV of unknown year and make. The second occurred about 8:30 a.m. at 140 Alcorn Drive, where a Chevrolet Monte Carlo, unknown year, was reported on fire.

The apparent ignition of the blazes led investigators to suspect arson, the chief said earlier Friday. Fire Investigator Leslie Decareaux was not available Friday night.

A number of residential arsons have been reported or suspected in the city this year, including a row of six structures — five homes and a small vacant store — near Jackson and Second North streets. A former volunteer firefighter, Leroy Evans, 32, Utica, has been charged in those fires. Evans is free on bond.