HELENA, Mont. -

Authorities say the body of a 73-year-old man has been found inside a mobile home in Lincoln that was destroyed by fire.
    
The home burned Wednesday.
    
Lewis and Clark County Coroner Mickey Nelson identified the victim as Sheldon Sullivan. Nelson tells the Helena Independent Record the cause of death hasn't been determined but it is likely smoke inhalation or super-heated air.
    
Nelson says Sullivan recently had smoke alarms installed but that the victim's mobility was limited.
    
A neighbor discovered the fire at about 5:45 a.m. Wednesday. There was no immediate word on the cause.
    
Lincoln is about 40 miles northwest of Helena.