The fire started a little after 10 p.m. at the East Side Church of God on Church and Maple. Crews spent the night checking the church for hot spots after the fire spread from the bus outside all the way up into to the building's attic.
Witnesses told first responders they couldn't find the man who lives in the bus.
Fire investigators aren't sure what started the fire, or how the person on the bus died.
'Everyone saw him banging on the windows begging for help-but no one was brave enough to save him'-fatal fire witness pic.twitter.com/ymnd0cjQcE— Sontaya Rose (@SontayaRose) June 16, 2015