Investigators are trying to figure out what started a fire in a mobile home that killed a man early Thursday morning in Pulaski County.
The fire broke out around four Thursday morning on Daultons Drive in Somerset.
Firefighters say 52-year-old Gary Whitson was trapped inside and couldn't get out.
Neighbors tried to help but couldn't get inside.
Investigators think the fire was an accident. Whitson's family thinks he may have fallen asleep while smoking.