A teen girl says in a lawsuit that her uncle, who owns a Southampton, L.I., excavation firm, repeatedly raped her over three years. Steven Mezynieski, 44, first sexually assaulted the girl when she was 15, according to the civil suit filed in Suffolk County Supreme court Thursday.The girl, identified by her initials J.G. in court papers, says the abuse began when she went on vacation to Punta Gorda, Fla., with Mezynieski.

Later, he used rope to restrain her in order perform oral sex on her without consent at his business, Driftwood Farms, the court papers say. The alleged abuse lasted from 2012 to 2014. “This man is a sick human being,” the girl’s lawyer, Rosemarie Arnold, said.(nydailynews)…[+]