Nathan Gastineau, 31, of Redlands, was originally charged with six felonies -- four counts of lewd acts with a child 14 or 15-years-old and four counts of unlawful sexual intercourse. Prosecutors filed four new charges against him Thursday -- two more counts of lewd acts with a minor and two more counts of unlawful sexual intercourse.
The charges stem from allegations that Gastineau had a sexual relationship with a 16-year-old girl who was a police Explorer at the Highland Sheriff's Station. Gastineau, who was a 10-year-veteran of the department, was one of the advisors to the Highland Explorer post.
Gastineau appeared in court Thursday and pleaded not guilty to all of the charges against him. He is next due in court Feb. 24 for a pre-trial hearing.
The girl's attorney, Gloria Allred, also filed a civil suit against Gastineau Dec. 13. In it, the attorney seeks damages from Gastineau, the Sheriff's Department, San Bernardino County, the city of Highland and Public Service Academy, the private high school the girl attended.
Sheriff's investigators arrested Gastineau April 22. After serving search warrants, they found photos and at least one video of Gastineau having sex with the girl when she was 15-years-old, according to reports the detectives filed with prosecutors.
Sheriff's detectives Tyson Niles and Julie Brumm testified Dec. 15 in a preliminary hearing that Gastineau confessed during interviews to having a consensual sexual relationship with the girl. Those confessions were audio-recorded and submitted to evidence, according to court documents.
During that hearing, Gastineau's Redlands-based attorney, Andrew Haynal, argued that his client's confession came before he was read his Miranda Rights. But according to court documents, Niles and Sgt. Roberto Lomelli Mirandized Gastineau right after he made his first incriminating statement. And after the detectives read him his rights, Gastineau waived his right to remain silent and answered questions referencing the alleged relationship with the girl.
The Sheriff's Department announced in June that Gastineau was "no longer" a deputy but would not say specifically if he had been fired.
A second man, Jason Anguiano, 27, of Rialto, was arrested just days after Gastineau and accused of having a sexual relationship with the same girl. And according to court documents, Anguiano's relationship with the girl started while she was still in a relationship with Gastineau, behind his back.
Gastineau and Anguiano are members of a fan club called the Inland Empire Ghostbusters. The girl was also a member of the group.
Anguiano took a plea bargain in June, pleading guilty to two counts of sexual penetration with a foreign object and one count of unlawful sexual intercourse. Her served 180 days in county jail and was released Oct. 22. He must now serve a three-year probation term and will not have to register as a sex offender, as part of his plea agreement.
The Inland Empire Ghostbusters list Gastineau and Anguiano as active members on the group's Facebook page.