Baton Rouge fire investigators are trying to determine if the vacant house fire intentionally set on Nebraska Street early Wednesday is connected to two other arsons in the same area Sunday.

Firefighters responded to 2009 Nebraska St. at 2:33 a.m. and found the house engulfed in flames that were so intense the siding melted on a home across the street, said Fire Department spokesman Curt Monte.

The person who lived in the home where the siding melted was not injured, Monte said.

Once investigators got inside the house, they determined the fire was arson.

The other two arsons occurred Sunday at 2319 Tennessee St., and at 1136 Coolidge St.

Monte said Wednesday that there is no evidence to show that the three fires are related, but investigators are not ruling out that possibility.

He said the only connections between the fires are that they were all intentionally set in vacant homes and the houses were in the same area.

Firefighters arrived at the fire on Tennessee Street at 1:42 a.m. Sunday and found heavy smoke drifting from the attic and several small fires burning in separate areas of the home, Monte said. Most of the fires either died on their own or were put out quickly by firefighters; however, one in the attic spread quickly.

Firefighters also were called out at 9:14 p.m. Sunday to Coolidge Street to find that home engulfed in flames, Monte said.

Firefighters were able to save the home on Tennessee Street, but the other two were destroyed.

No one was injured in any of the fires.