Stephen Collins -- NYPD Looking For More Sexual Molestation Victims

Stephen Collins is NOT in the clear in the child molestation case -- not by a long shot -- because we've learned the NYPD is on the hunt for fresh victims.

TMZ broke the story ... the NYPD was investigating at least 3 cases of alleged molestation or indecent exposure, but all 3 cases are so old authorities believe the statute of limitations have run.

But sources tell TMZ ... 2 NYPD detectives flew from New York to Seattle to interview the woman whom Collins admits on tape to molesting when she was 10.

Cops were not interested in probing the woman's story any further, but they were intensely interested in finding out if other, more recent alleged victims might have come forward.

Law enforcement sources tell TMZ ... they don't want to close a case where the suspect admitted he's a child molester. So the NYPD is aggressively pursuing leads and has no plans to shelve the case.