But prosecutors wrote in a court filing exclusively obtained by RadarOnline.com on Wednesday afternoon that Rivera "caused the death of Mollie Tibbetts, that he acted with malice aforethought, premeditation, willfulness, deliberation, and specific intent to kill."
Tibbetts' autopsy results revealed that she died from “multiple sharp force injuries.”
Rivera allegedly spotted Mollie running on her routine jog in the secluded town of Brooklyn, Iowa on July 18 when he parked his car, got out and ran alongside her, according to the documents obtained by RadarOnline.com.
According to the murder in the first degree arrest warrant, police captured Rivera after viewing video footage from an area on the east side of Brooklyn, Iowa from July 18, 2018.
The new documents show that when cops asked Rivera if the black Chevy Malibu was his, Rivera said, "Yes, that's my car."
RadarOnline.com broke the story when the accused killer begged taxpayers for $5,000 to help get him off the hook.
Rivera told police he "got mad" and "blocked his memory."
Police say the final forensic testing will be completed in November 2018 and they are expected to provide the defense with an updated investigative report on Friday, October 13.
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