CARTHAGE, N.C. (AP) — A lone gunman burst into a North Carolina nursing home Sunday morning and started “shooting everything,” barging into the rooms of terrified patients, sparing some from his rampage without explanation while killing seven residents and a nurse caring for them.Authorities said Robert Stewart also wounded three others, including the Carthage police officer who confronted him in a hallway of Pinelake Health and Rehab and stopped the brutal attack.”We had an officer, a well-trained officer, who performed his job the way he was supposed to and prevented this from getting even worse than it is now,” said Moore County District Attorney Maureen Krueger.By late Sunday afternoon, Krueger had charged Stewart, 45, of Moore County, with eight counts of first-degree murder and a single charge of felony assault of a law enforcement officer. Authorities offered few other details, allowing only that Stewart was not a patient or an employee at the nursing home and isn’t believed to be related to any of the victims.Authorities said Stewart began his rampage around 10 a.m. at Pinelake Health and Rehab in the North Carolina Sandhills about 60 miles southwest of Raleigh, firing shots inside and outside the home. It ended when 25-year-old Officer Justin Garner traded gunfire with Stewart in a hallway, wounding the suspect.Garner was wounded in his leg, and police said Stewart wounded two others. One person remained hospitalized Sunday night at FirstHealth Moore Regional Hospital in nearby Pinehurst, and police would only say Stewart was in the custody of the Moore County Sheriff.Beverly McNeill said her mother, Pinelake resident Ellery Chishole, called moments after the gunman stormed into her room and pointed his “deer gun” at her roommate. “They’re up here shooting, they’re up here shooting,” she frantically told her 14-year-old granddaughter, Tavia, over the phone.Chishole told her daughter she hid her face in her shirt so she couldn’t see the man or what she expected him to do, McNeill said. He didn’t shoot, but left the room and began shooting down the hallway.Carthage police, Moore County sheriff’s deputies and the State Bureau of Investigation conducted a search Sunday afternoon of the nursing home and its parking lot, where the windows of at least two cars were shattered. Among the items they found was a camouflaged-colored rifle or shotgun, which was leaning against the side of a Jeep Cherokee.Howard McMillian, of Lakeview, said he raced to the scene as soon as he heard about the shooting. His 56-year-old sister lives at the nursing home, and McMillian said his brother had gotten a call from officials saying she was unharmed.”I know she’s real nervous,” McMillian said. “I just want to make sure she’s OK.”