The suspect, identified as Kevin Moses Walker, 41, of Pikesville, Maryland, was killed during the incident after Michael Hatcher retrieved a handgun from his vehicle and fired a single shot to stop the attack.

"This is a highly unusual, apparently completely random [attack] with an individual with no known history of violent behavior of any kind, or even criminal behavior of any kind," Sheriff Hutcheson said.

According to the investigation, Walker rented a campsite at Endless Caverns, in New Market, Virginia, on August 1 at 2:22 p.m. and took a tour of the caverns at 3 p.m.

Later that day, at 5:24 p.m., he purchased a sleeping bag and a large knife at the Timberville Walmart, about seven miles from the caverns.

The following morning, Virginia State Police responded to a report of an ab

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