LILLINGTON (AP) — The family of a man who was shot and killed by a Harnett County sheriff’s deputy while sitting on his porch last year has filed a federal lawsuit that accuses the department of having a history of abusing and harassing the public.

News outlets report the lawsuit was filed Wednesday, one year after 33-year-old John Livingston, of Lillington, refused to allow deputy Nicholas Kehagias to search his home without a warrant. The deputy said he feared for his life after the argument turned physical. A grand jury refused to indict the officer.

Five other residents are also plaintiffs in the lawsuit, which says Kehagias and deputies Brandon Klingman and John Knight called themselves the “KKK” and trained together in a type of “fight club.”

The department could not be immediately reached for comment.