Investigators say they found material that could be used to make bombs while responding to a report of a domestic incident on Lewis Street.
Paterson police went to the home around 3:50 a.m., and the county's bomb squad responded a short time later after a woman said homemade explosives were in the residence.
Authorities soon found several containers of unknown liquids and powders and other items in the home.
Officials say police also found marijuana plants in the basement.
So far, they have not disclosed the identity of the suspect.
Passaic County authorities didn't provide specifics of the items found or say whether anyone had been arrested.