About 15 acres burned Wednesday. A similar blaze burned a few acres on Tuesday.
Josh Rigsbee and his grandfather Larry saw Wednesday's fire first hand.
"I came around the curve and saw smoke," said Larry.
Rigsbee said his grandson saw something suspicious.
"He saw two people run out of the woods on this side," he explained.
"I ran across them," said Josh. "I yelled at them to stop and they just kept going."
The Wake County Sheriff's Office sent its K-9 unit to try to track down possible suspects, but the smoke was too strong.
Firefighters were close by to put out the flames.
"We were down here checking on the fire from yesterday," said Rob Montague with the NC Forest Service in Granville County. "We had a significant fire just because we haven't had significant rainfall in the last few weeks."
While both fires are being investigated, the Rigsbee's are concerned for the residents.
"There's a lot of elderly people. Half of them don't come out of their house unless they have to. The fire could be right at their door and they'd never even know," said Larry.
They also want to protect the land they've hunted for years.
"I hope they catch 'em. This land means a lot," said Josh.