(CNN) -- At least four people -- three in North Carolina and one in Indiana -- were injured after weapons went off at gun shows Saturday, officials said, at a time when there's been renewed discussion about private gun sales at such shows.
Dixie Gun and Knife Show attendees bolted, with at least one woman wiping out in the frenetic scene, after gunfire rang out around 1 p.m., as seen on video captured by CNN affiliate WRAL.
Police later explained that a 36-year-old man from Wilmington, North Carolina, was unfastening the case of his 12-gauge shotgun on a table near the show entrance when it accidentally discharged. The man planned to sell the shotgun at the show.
The bird shot ended up injuring three people. One was a sheriff's deputy, who suffered a slight injury to his hand and was treated and released at a local hospital before returning immediately to work, said Joel Keith, chief of police of the North Carolina State Fair.
A 54-year-old woman from Benson, North Carolina, was being treated a wound to her right torso at a local hospital, and a 50-year-old man from Durham, North Carolina, was treated for an injured left hand, Keith told reporters.
"I want to emphasize that this is an accident," Keith said.
That said, Wake County sheriff's investigators and the local prosecutor will determine whether to file charges against the gun's owner, authorities said.