RALEIGH — People who bring guns to the State Fairgrounds to sell at gun shows will have to follow some new rules after an accidental shooting that injured three people last month.

The state Department of Agriculture and Consumer Services announced Tuesday that gun show visitors with firearms will have to park in designated areas and use a separate entrance. In addition, their firearms must be out of their cases, with the actions open and all magazines, bullets or shells removed.

As at past shows, security officers will examine firearms at the entrance and secure them with straps. Fairgrounds police will place special emphasis on ensuring that no gun sales occur in parking lots, said the department’s chief Joel Keith.

A security guard and two others were injured at the Dixie Gun & Knife Show at the fairgrounds in January after a shotgun went off as it was being checked at the show’s entrance. The gun owner was planning to sell it at the show.

The agriculture department says it consulted with law enforcement and show promoters in developing the new rules, which will also apply to gun shows at the Western North Carolina Agriculture Center in Fletcher, near Asheville.