A former Anchorage police officer accused of being an illegal immigrant living under a stolen identity plans to plead guilty to federal charges, according to court documents.

Mexico-born Rafael Mora-Lopez, who lived for more than two decades in Alaska as Rafael Espinoza, said in court papers he will plead guilty to charges of passport fraud and false claim of U.S. citizenship.

The documents filed Thursday say the real Rafael Espinoza is a legal U.S. citizen. Authorities say he also holds citizenship in another unspecified country.

Mora-Lopez, 47, worked as a well-regarded police officer for six years until his arrest in April. He initially pleaded not guilty to passport fraud and has been out on bail under home confinement and electronic monitoring.

He has declined to comment. His attorney, Allen Dayan, did not immediately respond Monday to a telephone call seeking comment.

The court papers say Mora-Lopez's wife, Margarita Cynthia Espinoza, had been a neighbor of the real Espinoza in Guadalajara, Mexico, in the 1980s. But it's not clear how the identity was obtained, Assistant U.S. Attorney Frank Russo said.

Mora-Lopez used Espinoza's name, Social Security number and date of birth to apply for an Alaska driver's license in June 1989, presenting a birth certificate and Social Security card as evidence of his identity, the court papers say.