A fire chief suffered a minor injury when ammunition inside a burning home shot out and hit him, officials said.
Firefighters responded to the fire in Hinesburg, Vermont, shortly after 3:30 p.m. on Saturday. No one was home at the time, WCAX-TV reported.
The ammunition that caught fire and shot out of the house delayed crews from putting the fire out, the television station reported.
The fire also damaged a neighboring home.
Investigators believe that cigarette butts found in pine needles under pine shrub sparked the fire.
The Associated Press contributed to this article