Illegal alien Cristhian Bahena Rivera has been charged with First Degree Murder for the slaying of Iowa college student Mollie Tibbetts.

The 24-year-old illegal alien has been apprehended thanks to surveillance footage of him in the area.

“Rivera, a Mexican national, is an undocumented immigrant and led detectives to her body in rural Poweshiek County, according to Iowa investigators,” the Washington Post reports.

The police say that Rivera had made advances on Tibbetts while she was out jogging and began running alongside her. When she threatened to call the police, the illegal alien says that he “blacked out.”

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First degree murder charged in Mollie Tibbetts disappearance. 24-year-old Cristihian Bahena Rivera, 24. Rivera lives in Poweshiek Co. Authorities confirm "he is an illegal alien." pic.twitter.com/W00podixui — KWWL (@KWWL) August 21, 2018

A search had been underway for Tibbetts’ body for 34 days, after she went jogging and never returned. The search began when she did not show up for work at a Grinnell daycare the following morning.

The body of the 20 year old student was discovered on Tuesday in a field covered with corn stalks.

BREAKING: Cristhian Bahena Rivera, 24, an undocumented immigrant, has been arrested for the death and disappearance of Mollie Tibbetts. pic.twitter.com/dndgyUieOp — Bill Schammert (@BillSchammert) August 21, 2018

Rivera is now being held on a federal immigration detainer. He has reportedly been in the country for four to seven years.