MILWAUKEE — Prosecutors have charged a 21-year-old Milwaukee man with carrying a concealed firearm near the Republican National Convention’s security perimeter.

The Milwaukee County District Attorney’s Office filed one misdemeanor count of carrying a concealed weapon without a permit against the man on Tuesday.

According to the criminal complaint, federal agents patrolling the convention’s security zone spotted the man walking on Monday morning. The agents noticed the man was wearing black pants, black gloves and a ski mask and was carrying what the complaint described as a “large black tactical backpack.”

The agents stopped him and noticed a bulge in his waistband, prompting them to ask if he had a gun. The man allowed the agents to search him, according to the complaint. They found an AK-47-style pistol in his backpack. The agents also found a “Scream” movie mask, a flashlight and other materials.

The man told the agents he didn’t have a concealed carry permit, the complaint said.

Online court records indicated the man was scheduled to make his initial court appearance Thursday morning.

Court records did not indicate if the man had an attorney who could speak on his behalf and the district attorney’s office said it had no information on who might be representing him. Attempts to find a telephone number for the man were also unsuccessful.