BROOKLYN - A federal prison guard is facing charges after prosecutors say she had an affair with a man convicted in one of New York City's most notorious cop killings.

According to authorities, 29-year-old Nancy Gonzalez is accused of having sexual intercourse for months with Ronell Wilson at the Metropolitan Detection Center in Sunset Park. She is now eight months pregnant, and the child is believed to be Wilson's.

Wilson was convicted in 2006 for killing NYPD officers James Nemorin and Rodney Andrews during an undercover sting. He remains behind bars in Brooklyn awaiting sentencing.