UPDATE: Brother Charged in Weapons, Drugs Raid: "You Want Nazi Salute?"

Two brothers were arrested Thursday after authorities said they found bomb-making instructions, drugs, weapons, high-capacity ammunition magazines and $50,000 in cash while executing a search warrant at a Long Island home.

The brothers were arrested after Suffolk County police raided a home in Mount Sinai early Thursday, the department said.

Edward and Sean Perkowski were expected to be arraigned Friday. Messages left with their attorney Thursday have not been returned.

Suffolk County Police Commissioner Timothy Sini says in addition to the weapons cache, police found marijuana and illegal mushrooms.

He added that Nazi paraphernalia was also found in the home, including portraits of Adolf Hitler, as well as a manual with instructions on how to make a bomb.

Neighbors told NBC 4 New York they've always known there was trouble at the house. They're just not sure why police didn't do anything sooner.

"I have a 9-year-old son who gets very nervous around the house. You know there's stuff going on there that's not right," said John Leonard.

"That scares the hell out of me. That takes it to a whole new level," he said. "I live two houses down, so bomb-making materials, instructions, whatever it might be, that just escalated that a lot."

The house had a condemned notice on the front Thursday, but police wouldn't discuss how long they've been investigating the brothers. They also didn't say if they found any evidence of a specific plot.

A third brother, who is not facing charges, stopped by the home Thursday.

"This is all twisted, it's all wrong," he said before walking away without futher explanation.

Another woman outside the home who identified herself as a relative said the brothers are "good kids" and they own a military surplus store. She would not comment on police characterizing the seized items as illegal.

Neighbor Brian Saltzer said, "It's just outrageous and appalling that we have to live next to this. I pay taxes, I'm a veteran, I'm a nursing student. I'm just happy the house is condemned and we can go back to being a peaceful community."