CUMMING (Updated 12:32 p.m.) — Authorities have identified the gunman this morning who shot a veteran sheriff’s deputy in the leg outside the Forsyth County Courthouse as 48-year-old Dennis Ronald Marx of Cumming.

Forsyth County Sheriff Duane Piper said that Marx, who was shot and killed by other deputies, acted alone.

Piper described Marx as a “sovereign citizen” who was due in court on drug and weapons charges.

According to Piper, Marx parked his sport utility vehicle outside the courthouse and threw out spike strips before beginning a “frontal assault” on the facility.

Marx shot a deputy who attempted to stop him before other deputies responded to the gunfire and shot the suspect.

Piper said Marx, who was no stranger to law enforcement, lived on Lakeside Trail east of Cumming and near Lake Lanier.

Authorities are searching the home in case it was booby-trapped.

Check back for updates at forsythnews.com.