EVERETT – A Marysville man faces at least 20 years in prison after pleading guilty June 4 to raping his 6-year-old stepdaughter, whom he also advertised online for others to molest.

Police are still trying to identify anyone who may have answered almost 200 Craigslist ads the man and his wife posted. Investigators recovered at least one video showing a man engaged in criminal behavior with the girl.

The Marysville man, 56, also could be facing federal child pornography charges. The girl’s mother, 34, remains charged with multiple sex crimes, including child rape.

The newspaper is not publishing their names to protect the identity of the child and her younger brother. Child Protective Services removed both from the home after the couple was arrested in November.

A child pornography investigation led Snohomish County detectives to the couple’s house. An investigation in Florida uncovered evidence that the Marysville man was sending child pornography to a woman in Texas.

The email conversation centered on plans to meet up in Marysville so the pair could sexually abuse the man’s daughter, court papers say.

The child’s mother allegedly admitted that she also advertised online for massage services. She reportedly admitted that she engaged in sexual activity if clients asked, court papers say. Prosecutors allege that she is seen on a video playing a game on her phone while her daughter is being sexually abused by a man.