Agent: Iowa student would have been found without confession

  • FILE - In this Aug. 21, 2018, file photo, a poster for then missing University of Iowa student Mollie Tibbetts hangs in the window of a local business in Brooklyn, Iowa. Lawyers for the man charged with killing Tibbetts are asking a judge to throw out evidence discovered during a faulty interrogation, including the victim’s body. A court hearing is scheduled Wednesday, Nov. 13, 2019, to consider the matter. (AP Photo/Charlie Neibergall, File)

  • Cristhian Bahena Rivera appears for an evidence suppression hearing at the Poweshiek County Courthouse, Wednesday, Nov. 13, 2019 in Montezuma, Ioea. Bahena Rivera confessed to killing Molly Tibbetts last year, but his attorneys filed a motion to suppress the confession because he was not properly read his Miranda warning during initial interviews with police. Rivera is scheduled to stand trial for first-degree murder in February. (Brian Powers/The Des Moines Register via AP)

MONTEZUMA, Iowa — Investigators who led the search for missing University of Iowa student Mollie Tibbetts testified Wednesday that they believe her body would have been discovered even without the suspect in her killing leading them to its location.