Multimillionaire real estate agents Tal and Oren Alexander and their brother Alon were arrested in Miami, Manhattan federal prosecutors said Wednesday – after several women accused them of sexual assault.

The indictment filed a series of civil lawsuits accusing Oren and his twin Alon of heinous attacks, including allegations that they took turns raping a woman at a Hamptons castle dubbed the “Playboy Mansion of the East Coast.”

Oren and Tal Alexander are the co-founders of the luxury real estate company Official, which offers luxury listings in locations such as New York City, the Hamptons, Miami and Los Angeles.

It was not immediately clear what the brothers were accused of. The FBI and the U.S. Attorney’s Office for the Southern District of New York will provide additional details at an afternoon press conference.