Three people, including the gunman, are dead after a man went on a shooting rampage at a liquor store in Rockdale County, Georgia, then went home and shot his parents, Atlanta's WSB-TV reports.

Deputies confirmed the gunman is 36-year-old Jeffrey Scott Pitts, who was killed after he reportedly fired shots at Rockdale County sheriff's deputies.

Law-enforcement officials swarmed the Magnet package store in Conyers. Locals could not believe somebody fired gunshots inside.

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"It's crazy. It's crazy. I can't believe this happened so close to home. It's all I can say," customer Don Rogers said.

Early Sunday afternoon, a man detectives described as a regular customer of the liquor store had a run-in with a clerk over an unpaid bill.

The clerk apparently kept his identification. Investigators say a few hours later, the suspect came back to get it with a gun.

"At some point, he began firing shots inside the store, striking, we believe, two individuals in the store," Rockdale County Sheriff Eric Levett said.

Levett said Pitts killed a clerk and a customer, then went home along Ebenezer Road, where he shot his own parents. When a deputy arrived, he opened fire on the officer, possibly with an assault rifle found at the scene, officials said.

"He continued to fire shots at the deputy. The deputy returned fire," Levitt said.

Levett said the suspect was hit. People said the people who run the place are well-known and well-liked.

"They're nice. It's family oriented. You hate to see stuff like this go on. That's it," a customer said.

For the latest on this developing story, visit WSB-TV and The Atlanta Journal-Constitution.