Michael Mendez, 42, is charged with numerous drug offences, kidnapping, false imprisonment and criminal restraint.
Credits: Handout/New Jersey State Police
Investigators found the 44-year-old woman in the Paterson apartment Thursday, identified as the girlfriend of an alleged Latin Kings gang member.
The woman was taken to hospital for a medical evaluation, police said.
The gang unit says officers found nearly $23,000, 4,200 prescription pills and marijuana.
Michael Mendez, 42, is charged with criminal restraint, kidnapping, false imprisonment and drug-related offences.
"Information developed during the investigation indicates that Mendez held his girlfriend in the bedroom for extended periods of time over the past two years and possibly longer," police said in a statement Monday.
Neighbours told local TV station Pix11 they recall seeing Mendez with the woman and they appeared to be a "normal" couple.