DYER COUNTY, TN (WMC) - Dyer County investigators said they discovered two guns at the county high school on the same day as a mass shooting in Florida.
Investigators said one gun had been sold to a student for $250 by 73-year-old Stephen Harrison.
The unloaded weapon was found in the student's backpack.
Investigators searched Harrison's home and said he had several other weapons that may have been stolen.
Another gun was found in a student's vehicle after the student said he had been duck hunting.
Dyer County Sheriff Jim Box said he commends the students for speaking up and the quick-thinking school resource officer for investigating.
Harrison is charged with unlawful sale of a firearm and is due in court Thursday morning.
Piles of old furniture, boxes, and more surround Harrison's red barn and home in Dyersburg.
Neighbors said the 73-year-old keeps to himself.
"He's just one of those kinds of people that my instincts tell me to stay away from," neighbor Billy Joe Hooper II said.
Dyer County investigators arrested Harrison last Friday after executing a search warrant and seizing more than a half-dozen guns from his home.
"He knew he was young," Sheriff Box said. "He didn't know exactly what age. He was 16."
An anonymous tip led the Dyer County High School resource officer to find an unloaded .38 Smith and Wesson pistol in the student's backpack.
The teen claimed he brought the gun to school to swap the weapon for stereo equipment from another student.
That student said he was unaware of the trade, but it led investigators to the discovery of a second weapon, a shotgun left in that student's truck on school grounds.
"School is no place for firearms," Sheriff Box said. "And it don't matter if you went hunting the day before and left an unloaded firearm in the truck."
Both Dyer County teens face charges of unlawful possession of a weapon on school grounds.
Dyer County Sheriff's Office is now checking with ATF to verify if the guns found at Harrison's home were legally owned.