A Des Moines man charged for sexually exploiting three children and has been convicted on federal child pornography production charges.

Indicted in October, Robert D. Thorson was convicted on Monday on the child pornography production charges following a jury trial in U.S. District Court at Seattle. Thorson, aged 58, had been charged with the child molestation following his arrest in May.

Thorson was found out after a woman discovered an incriminating video on his phone. He had molested a young child known to him while capturing that abuse on his cell phone.

The woman went to the police in May after discovering that video. Investigators later found the recordings which Thorson made using hidden cameras placed in his bathroom. Thorson’s tattooed arm was visible in the video recordings, which showed the two children naked.

Detectives determined that Thorson exploited three children, rubbing his penis on one of the children while she slept. He also amassed a collection of child pornography videos from the internet.

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Following his arrest, Thorson is believed to have sent an 8-page letter to the woman who reported him to the police. In the letter, he demanded the woman to contact his public defender, recant her statements and claim that the videos were forgeries.

He was Jailed since his arrest, Thorson vigorously fought the allegations. Thorson  took the stand in his defense on Monday, to no avail.

Prior to the trial, Thorson vigorously fought efforts by the investigators to photograph his genitals in order to compare them to images he took during a sexual assault on a sleeping girl.

Thorson, who was convicted of the production and possession of child pornography, faces a mandatory minimum sentence of 15 years in the prison. He is scheduled to be sentenced on March 12 by the U.S. District Judge Ricardo Martinez.

By Mrudula.