Arson is suspected in a fire that damaged a West Side home early Tuesday morning.

San Antonio firefighters were called to the home on Fran Fran Street just after 1 a.m., and arrived to heavy smoke and flames. Firefighters put out the blaze and no injuries were reported.

Investigators said no one was home at the time of the fire and they believe it started outside.

Damage estimates and a cause for the fire were unknown as 7 a.m. Tuesday.