The July incident allegedly took place inside one of the camp's cabins, said the official, where two witnesses reported a child was in medical distress lying on the floor, bleeding from the nose, making sounds and twitching.
The exact age of the boy is not known, but Redberry's website states it was hosting a "Junior Teen Camp" for kids aged 12 to 14 at that time.
Some children went to get help and came back with the staff member, according to the report.
According to the government source, the complainants reported that the man decided to perform an exorcism on the child as the other children watched.
It's unclear how long the ceremony lasted, but at the end, the complainants say the man told the children he got rid of the demon that had possessed the child. He then handed his business card to each of the children, said the source.
He told the children they had to stay in contact with him for the rest of their lives, because only he knew how to ward off the demon they'd all encountered, according to the report.