SHOCKING graphic evidence will be shown during the trial of a Mexican national charged with murdering Mollie Tibbetts, prosecutors warned.

Opening statements are set to begin on Wednesday in the trial of Cristhian Bahena Rivera, who allegedly viciously murdered Tibbetts, 20, and dumped her body in a field.

Rivera, a Mexican national who came illegally to the US as a teenager, is charged with first-degree murder for the 2018 slaying of the 20-year-old University of Iowa student.

The 26-year-old will participate in the trial through a Spanish-speaking interpreter. 

Rivera’s arrest inflamed anger over illegal immigration, with then- President Donald Trump calling Rivera a killer who exploited lax immigration laws and Iowa’s governor calling him a predator.

The case deepened anxieties about random violence against women, since Tibbetts was attacked while out for exercise in her small town of Brooklyn, Iowa.

She never made it back to the house where she was dog sitting for her boyfriend and his brother. 

The 20-year-old was studying to become a child psychologist.