A group of middle-aged men, dressed as animals and taking part in what is known as a "furry" parties in Bucks County, Pa., are accused of sexually assaulting a 9-year-old boy beginning in 2009.

As NBC-10 in Philly reports, David Parker, 38, of Stroudsburg, is accused of taking a 9-year-old boy to a Bucks County home where a group of men dressed up as animals and referred to themselves as "furries" as far back as 2009.

The boy, now in foster care, later told investigators that a man dressed up as a Red Fox and who called himself "Lupine" - later identified as Kenneth Fenske, 57, of Quakertown, Bucks County -- would take the boy upstairs during the furry parties and sexually abuse him, NBC-10 writes, adding that the boy said the abuse occurred several times over a seven-year period.

Pennsylvania Attorney General Josh Shapiro told NBC-10: "This is a horrendous case. It is deeply disturbing to me not only as Attorney General of Pennsylvania, but as a father of young children."

Shapiro added that the investigation is ongoing and there will likely would be other victims and more arrests.

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So far, Fenske has been charged with child rape, involuntary deviate sexual intercourse and unlawful contact with a minor.

Parker is charged child rape, possession of child pornography and other related offenses.

And three other men identified as Jeffrey Harvey, 40, of West Wyoming, Luzerne County, Craig Knox and Stephen Taylor have been arrested, with charges as follows:

Harvey is charged with unlawful contact with a minor, criminal use of a cell phone, involuntary deviate sexual intercourse and statutory sexual assault. Knox, who was arrested in Virginia, is charged with sexual offenses. Taylor, who was also arrested in Virginia, is charged with bestiality and other related offenses, investigators told NBC-10.

Anyone with information is asked to call the state Attorney General's office at 1-800-385-1044.