Six people were wounded. Officials said the suspect, who has not been identified, acted alon and died at a hospital in Reno.
Authorities did not say whether the attack targeted the Guard members, who were meeting at the restaurant in a strip mall on Carson City’s main street.
However, they believe it was an isolated incident.
Both Guard members killed were in uniform. One was a man, the other a woman, authorities said.
Witnesses said the gunman pulled up in a blue minivan at about 9am and shot a man on a motorcycle, then walked inside the restaurant and started shooting.
He then walked outside and fired shots toward a barbecue restaurant &and at a nearby casino.
“I don’t know what’s happening to my city,” Fran Hunter, who works at the Sierra Le Bone pet shop just north of the scene, told the Reno Gazette-Journal. “This happens in LA or Las Vegas but not here.”
Carson City Sheriff Kenny Furlong said officers received a call about the gunfire and responded within minutes. He said the suspect was wounded and lying in the car park when they arrived at the scene.
Furlong said the person who was shot on the motorcycle was alive when officers arrived, and was brought to hospital.
Public and court buildings were locked down for about 40 minutes, and extra security measures were put in place at state and military buildings in northern Nevada state after the shooting.
“There were concerns at the onset, so we took certain steps to ensure we had the capability to embrace an even larger circumstance,” Furlong said.
“At this point in time it appears to be isolated to this parking lot.”
Police and FBI agents descended on the scene, and yellow police tape surrounded the car park at the restaurant, which is near a department store.
A body lay on the ground at the scene, covered with a white sheet except for the feet, which were in tan boots.
“As you know when you have people in uniform who are randomly targeted for whatever reason this may have been, it is a safety precaution we take very seriously,” Nevada Highway Patrol trooper Chuck Allen said.
A medics said four of the shooting victims were being treated at the Reno hospital, but he said he could not discuss their condition or provide any other information.