PORT ORCHARD — A judge in Kitsap County on Monday found probable cause to detain a 17-year-old boy under investigation in the death and sexual assault of a 6-year-old Washington girl.Prosecutors in Kitsap County filed court documents Monday saying they had sufficient evidence to hold Gabriel Gaeta on first-degree murder with aggravating circumstances, felony murder and first-degree rape of a child.Judge Kevin Hull set bail at $1 million. Hull also granted prosecutors’ request for a mental-health evaluation for Gaeta.Prosecutors said they want that competency evaluation before filing charges against the teen. They are pursuing the case in Kitsap County Superior Court, where Gaeta is expected to be tried as an adult.The teen arrived in court with a black jacket over his head. He spoke softly as he answered the judge’s question. His next court date was set for Aug. 28.A message left with Gaeta’s lawyer Monday afternoon was not immediately returned.The parents of Jenise Wright sat in the second row in the courtroom.James Wright, Jenise’s father, told The Seattle Times the suspect was a close friend of the family and had visited their home many times.