Published: Aug 16, 2010 10:51 PM EDT
Updated: Aug 16, 2010 7:49 PM EDT

LEHIGH ACRES, Fla. - Investigators say a fire that damaged a Lehigh Acres house early Monday morning was intentionally set.

It happened shortly before 2 a.m. at a vacant home on Alabama Road.

No one was injured, because no one lived in the home - which neighbors say is part of what raised their suspicion.

Damage to the outside of the home is minor, but the inside sustained extensive damage.

Inside the home, firefighters say they battled multiple fires in several rooms.

Neighbors say they saw people moving out of the home just one day before the fire broke out.

"Surprised that there's a fire, yeah - of course that's always a surprise. But its just a little odd... No one's been here and just last week they cleaned up, there was a huge pile of garbage out here and a week later there's a fire," said Bryan Simpson, who lives next to the house.

This is at least the third vacant house fire, ruled an arson, within the past week in Southwest Florida.

If you have any information on any of the fires, call 877-NO-ARSON, the reward for information is up to $2,500.