RAINIER, Ore. -- A former teacher’s assistant already indicted for allegedly having sex with an eight-grader at Rainier Jr. High School may face additional charges, according to a Longview newspaper.

Columbia Co. Sheriff's Office/kgw.com photo

Christine Marie Johanson as shown in a police mug shot.

The Longview Daily News report said that police were investigating a report that 35-year-old Christine Marie Johanson brought the boy, then 15, to Longview on several occasions to have sex.

The story also said that Columbia County authorities have forwarded the report to the FBI and the boy's mother said she's been told possible federal kidnapping charges might apply for allegedly crossing state lines with a minor for purposes of sex.

Johanson already stands accused of having a sexual relationship with the student while she worked at Hudson Park Elementary School. The indictment said she forced the boy to have sex with her.

-- Read original story about Johanson arrest in Rainier

Johanson has since pleaded innocent to 10 counts of third-degree rape, two counts of third-degree sodomy, 12 counts of second-degree sexual abuse and two counts of furnishing liquor to a minor

District officials said Johanson was fired in September and ordered to stay away from the boy and the school.