Medical examiner says Iowa student died from stab wounds

University of Iowa student went missing after going out for a jog on Wednesday

During the five-week search for slain Iowa college student Mollie Tibbetts her accused killer reported to the dairy farm where he worked every day, acting normally, according to one of his co-workers who asked CBS News to hide her identity. Dane Lang said he was shocked to learn to that Rivera's allegedly not in the country legally. "There were death threats, people threatening to burn down our buildings". Law enforcement officials questioned Rivera this week, they wrote in an affidavit filed in court, and he told them he had parked his auto and then run behind and alongside a woman running in Brooklyn.

Just one day earlier, Lang had put out a statement in which he said that Rivera, was an employee in good standing who had been vetted through the E-Verify system, a web-based system that allows employers to confirm employees' ability to work in the United States. But it's still pretty easy to fool the system, according to Alex Nowrasteh, an immigration policy analyst at the Cato Institute, a libertarian think tank in Washington, D.C.

I bet you weren't prepared to call Geraldo Rivera a hero today, but here we are.

The state medical examiner has determined that Tibbetts' death was a homicide. She said she doesn't want to believe it's him. "And from that we were able to track his pattern and the routes in which he took".

Rivera's lawyer, Allan Richards, disputed the government's claims that his client was in the country illegally and said Trump's comments highlighting his immigration status could prejudice future jurors.

The illegal alien has been living in the US for four to seven years. revealed exclusive images of the dilapidated trailer where Rivera had been living for the past couple of years, next to a two-story farmhouse also owned by Yarrabee Farms.

Investigators allege that Rivera abducted Tibbetts while she was out for an evening run on July 18.

President Trump said Friday night that Republicans will prevail in the midterm elections because Democrats "are not in a position to govern" with lax immigration policies that he said led to the death of Iowa teenager Mollie Tibbetts and others.

The Republican Party could score big in the midterms if Mollie Tibbetts, a woman thought to have been murdered by an illegal immigrant, becomes a "household name", Newt Gingrich has mused, inciting fury on social media. Authorities say her suspected killer, Cristhian Bahena Rivera, followed her in his auto as she ran along a country road before assaulting her. "He dragged Tibbetts on foot from his vehicle to a secluded location in a cornfield", the warrant says. He then tossed her over his shoulders and walked around 20 meters into the woods, where he tossed her body on the ground and covered her with corn leaves.

Once at the cornfield, Rivera discovered an earpiece from headphones, which caused him to look in his trunk, where he found Rivera with blood on the side of her head.

So far, authorities said they have not found anything indicating that Tibbetts and Rivera knew each other before the attack.