Fire investigators are trying to determine the cause of a Land O' Lakes house fire overnight that left two people injured.

According to Pasco Fire Rescue, firefighters responded to a fire at 19430 Bexley Road late Thursday night.

Authorities said an elderly woman was able to get out of the home but she suffered burns to about 15 percent of her body.

Firefighters also found an elderly man unresponsive in the home. Both patients were airlifted to a local hospital's burn center. Their conditions have not been released.

There is no word yet on what caused the fire.

The State Fire Marshals office is expected at the home later today.