Officials said Friday that sheriff’s officers discovered the remains of three individuals dead shot at an Iowa campground before uncovering their alleged attacker, who died of a self-inflicted gunshot.

According to a DCI statement, the Jackson County Sheriff’s Office and Iowa’s Division of Criminal Investigation (DCI) were “notified of a triple homicide in the Maquoketa Caves State Park campground” at 6:23 am.

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“Officers later found that a camper was unaccounted for,” Anthony Orlando Sherwin, 23, was found, according to the state agency.

“Sherwin appears to have suffered a self-inflicted gunshot wound, and there is no danger to the public,” he added.

Maquoketa Caves State Park is located in far eastern Iowa, approximately midway between Des Moines and Chicago.

“I’m horrified by the shooting this morning at Maquoketa Caves State Park and devastated by the loss of three innocent lives,” Gov. Kim Reynolds said in a statement on behalf of herself and First Gentleman Kevin Reynolds.

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“As we grieve this unimaginable tragedy, Kevin and I pray for the victims’ family members and the law enforcement officers who responded to the scene.”

Camp Shalmon staffers were roughly one mile from the event and went into active shooter mode Friday morning, according to executive assistant Beth Sallak.

The campers, who had been there from Sunday to Friday, were evacuated to adjacent Little Bear Park and were mostly kept in the dark about the cause of the evacuation, according to Sallak.

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“They didn’t have a sense of why,” according to Sallak. “We kept them unaware of it. We just wanted to keep them calm and happy.”