Investigators are trying to determine what killed an elderly man who was found dead inside his burned out apartment on the city's east side this morning, 1200 WOAI news reports.

 

  The fire alarm came in about 5:30 for the house cut up into apartments on the access road of Interstate 35.

 

  Several people were outside the building when firefighters got there, and they quickly extinguished a small fire.

 

  But when they entered the back apartment, they found the man dead.

 

  No word on whether he died due to the fire itself, or from some other cause.