LUTZ — A fire that engulfed a 5,400-square-foot house early Thursday has been ruled an arson.
Sam Venzeio, a spokesman for the state fire marshal's Tampa office, said investigators are interviewing a few people of interest.
Venzeio said it's not clear whether those people know the family who lives at the house, 3440 Crenshaw Lake Road. No suspects have been named.
The residents weren't home when the fire broke out at about 3 a.m., and no one was injured.
Venzeio would not discuss what led officials to point to arson, citing an ongoing investigation. But he said there was both physical and circumstantial evidence.
There were no witnesses, he said. Neighbors only saw flames shooting out of the house after the fire was well underway.
Investigators are examining samples from the charred home to determine whether an accelerant was used, Venzeio said.
"We're just not sure," he said.