Nassau police arrested a Port Washington man they say had a stockpile of so-called "ghost guns" Thursday.

They say they seized 11 guns without any serial numbers or other means of identification when they searched John Dejana's home and car.

Officials say some of the guns were assembled with a kit that can be bought online. "Ghost guns" are illegal due to the modifications that can be added to the weapon.

Police say they also found 3,000 rounds of ammunition, assault rifles, drugs and body armor.

Dejana, 47, had been the subject of a long-term investigation by the FBI Long Island Joint Terrorism Task Force. Police say Dejana had no criminal history or firearms licenses.

Officials say Dejana lived in Port Washington with his wife, four daughters and two dogs.

His bond is set for $200,000 and he remains in custody.

Police say more charges are possible. If convicted, he faces 25 years in prison.