SEATTLE (AP) — A scientist who was convicted in San Juan County of sexual misconduct involving a high school student but whose case was later thrown out has filed a federal lawsuit.

Gerald Grellet-Tinner claims in his lawsuit against the San Juan County Sheriff’s Office that he was wrongly convicted because of a conspiracy involving a former detective who had secret sexual relationship with the alleged victim.

Grellet-Tinner was accused of having sex with an Orcas Island High School student in 2015.

A judge threw out the case after an investigation revealed a relationship between the detective and alleged victim.

The detective was not prosecuted. He resigned from the sheriff’s office.

San Juan County Prosecutor Randy Gaylord says he has not seen the lawsuit and could not comment.