ADAMS COUNTY, Colo. -- The person accidentally shot in the chest at a gun show Saturday afternoon has been identified as 22-year-old Grand Edmunds from Laramie, Wyo.

Edmunds was shot in the chest at the Tanner Gun Show which was held this weekend at the Denver Merchandise Mart, near Interstate 25 and 58th Avenue.

The Adams County sheriff's office also identified the shooting suspect as 24-year-old Joshua Hertzler from Thornton. The sheriff's office did not provide any more detailed information about the investigation.

The vendor whose gun was used in the accidental shooting is 68-year-old James Peterschmidt from Aurora.

Edmunds was rushed to Denver Health for treatment. The Adams County sheriff's office did not update his condition as of Tuesday night. Witnesses told 7NEWS that the man was unconscious after being shot.

Witnesses said the man picked up a gun from a vendor’s table and it went off.

"He picked up a gun and it was loaded and he shot the guy next to him," said Mark Cameron.

"I started hearing, 'Oh my god, he got shot. He got shot in the chest,' " gun enthusiast Ken Gibson told 7NEWS.

"It was just a dumb accident," Cameron said.

Authorities said they are still investigating and trying to determine what actually happened.

The Adams County Sheriff's Office spokeswoman Candi Baker said it is illegal to have a loaded gun at a gun show.

The Tanner Gun Show states on its Web site that all guns brought into the gun show must be unloaded, including concealed weapons. All guns must be shown at the door and tied with a safety on the trigger.

Witnesses we talked to blamed the dealer, who they said should never have had a loaded gun on display. Other’s said the customer simply should have known better.

"Any gun you pick up off a table, you automatically assume its loaded," Cameron said. "It’s not a toy. It’s a gun."

Last September, a vendor at a gun show in Loveland accidentally shot himself in the leg while showing a firearm.