PATERSON, N.J. – Police searching an apartment for drugs found a woman they believe was kept padlocked in a bedroom for long periods of time during the last several years – perhaps as long as a decade.

State police said members of their street gang unit discovered the 44-year-old woman on Thursday as they searched the Paterson home of Michael Mendez, 42, believed to be a member of the Latin Kings street gang.

Based on interviews and evidence, acting Sgt. 1st Class Brian Polite, a state police spokesman, said investigators believe the woman was kept in the bedroom for extended periods for the last two years and possibly up to 10 years.

Investigators said the woman was sometimes let out of the room when her boyfriend was home.

One neighbor in the complex of three-story brick buildings said he has known Mendez for about a dozen years and that Mendez was a familiar face around the complex and often could be seen outside, polishing a car and listening to music.

The neighbor said he saw the woman a few times in recent years, though it was rare. The man, who refused to give his name because of worries about safety, said he remembered seeing the woman get into a car sometime in the last few years.

A maintenance worker, who also declined to give his name because of concerns about his safety, remembered the woman “cussing me out one time when I was doing my work.”

Neighbors on either side of Mendez’s top-floor apartment said they weren’t aware that another person lived in the apartment.

“I didn’t see any woman,” said a man who identified himself only as Buddy and opened his door only a few inches as he spoke. “This is the first I’m hearing of it.”

Mendez, who police said is a member of the Latin Kings, was being held Monday at Passaic County Jail. Authorities didn’t know whether he had an attorney. No one answered when a reporter knocked on his apartment door Monday.

Mendez was charged with kidnapping, false imprisonment and other counts, including some related to the drugs officials said they were looking for in the first place.

State police said they found 4,200 prescription pills valued at $100,000, 190 grams of marijuana valued at nearly $2,000 and nearly $23,000 in cash inside his apartment.

According to court records, Mendez has two prior convictions for aggravated assault, one of which carried a three-month jail term.

The woman was receiving a medical evaluation Monday.