(KTVI) - A Chesterfield Mom says a police officer arrested her son, took him to the police station and molested him. She spoke exclusively to Fox, because she believes the officer would still be molesting today, if not for Fox Files investigator Chris Hayes.
The accused is now ex-cop, David Cerna. We first found Cerna, while investigating a hidden camera inside a public bathroom. Cerna`s own police colleagues arrested him. That was just the beginning of the trail that led to one woman`s front door. She said, 'When he told me, I almost... basically fell to the floor.'
She does not want to be identified, in order to protect her son. She said a Chesterfield Police Lt. told her that his former fellow officer abused her 18-year-old son. She said the Lt. told her Cerna, 'had pictures of my son on his computer along with my son`s other parts.'
She thought back to when officer Cerna arrested her son on a misdemeanor, claiming her son was fighting another kid. She said, 'I saw my son, who has a disability, in the back of a police car, handcuffed and he kept on... `Mom, what`s going on? Where am I going? What did I do?`'
That was on Christmas Day, 2013. Cerna reportedly took the teen back to a police holding room, alone.
Attorney Gonzalo Fernandez explained what happened next. He said, 'David Cerna not only did a very thorough frisking, including frisking the genitalia, he would also pull out the sweat pants and appeared to be looking for contraband or weapons, at least that`s what the young man thought.' Fernandez continued, 'He had no idea there was a camera and he`s back alone with David Cerna thinking that`s what police officers do.'
No one but Cerna knew, until a Fox Files investigation in June, revealed his hidden camera in the men`s room at the Mobile on the Run on Clarkson in Chesterfield.
Chesterfield Police took our investigative intelligence and found their own officer as the culprit. Detectives say David Cerna confessed to posting the pictures on a porn site.
Attorney Gonzalo Fernandez said the police investigation that followed, uncovered evidence that Cerna victimized others while on duty. Fernandez explained, 'In fact the contact would often be initiated by him performing some sort of traffic stop.' Fernandez added, 'Some of these people are minors... I know one of them was as young as 16.'
Mom looks back at another time Cerna appeared at their home during a medical call. Attorney Fernandez described it, 'David Cerna kind of took it upon himself to walk through various bedrooms of the house by himself, which at the time seemed strange to the family and now knowing what they do about his propensity for clandestine filming, you wonder.'
Mom added, 'It`s messed my son up horribly. He is paranoid all the time, thinking that someone is watching him, all the time. He won`t sleep alone. He thinks people are after him all the time.'
For that reason, we had to protect the family`s identity.
David Cerna is locked up in St. Louis County, awaiting trial for Felony invasion of privacy charges. His own Department investigated this case, with the help of a cybercrimes task force. Prosecutor Bob McCulloch's office is prosecuting after taking the case to a grand jury.