More than 400 gallons of gasoline spilled from a tank truck Saturday, fouling the sewer system and forcing the evacuation of six homes for about 2 1/2 hours, officials said.

Bobby Doyle, chief of the Star City fire department and deputy chief of the county Hazardous Materials Team, said the spill occurred around 5 a.m. as a tank truck owned by RMF Oil Co. of Star City was pumping unleaded gasoline into an underground tank at a convenience store.No charges have been filed.

"We don't know yet how it spilled," Doyle said, "but 400 to 600 gallons spilled onto the highway and into the sanitary and storm sewers."