NEW YORK (AP) — A New Jersey woman whose false story about a gang rape sent an innocent man to prison has pleaded guilty to perjury.

Biurny Peguero (BEE’-ur-nee pay-GEHR’-oh) told police she was kidnapped and raped at knifepoint in 2005 by three men, including William McCaffrey.

McCaffrey was convicted and sentenced to 20 years in prison. He served three years before Peguero admitted this spring she had lied. New tests showed DNA from a bite on her arm wasn’t from McCaffrey, and he was released in August.

Peguero pleaded guilty Monday in state Supreme Court in Manhattan. The married mother of two from Union City, N.J., faces a maximum seven years in prison when she’s sentenced in February.

She told authorities she lied because her friends weren’t sympathetic after her encounter with men who had frightened but not attacked her.