Farm laborer convicted in 2018 stabbing death of Iowa runner

Defense attorneys Jennifer Frese, left, and Chad Frese speak during a news conference after the verdict in the Cristhian Bahena Rivera trial, Friday, May 28, 2021, at the Scott County Courthouse in Davenport, Iowa. A jury on Friday found Bahena Rivera guilty of first-degree murder in the stabbing death of Mollie Tibbetts, a University of Iowa student who vanished while out for a run in 2018. (AP Photo/Charlie Neibergall, Pool)

A photograph of Mollie Tibbetts is shown in the courtroom as Dalton Jack testifies during the trial of Cristhian Bahena Rivera at the Scott County Courthouse in Davenport, Iowa, on Wednesday, May 19, 2021. Rivera is charged with first-degree murder in the death of Tibbetts. Jack was Tibbetts' boyfriend at the time of her death. (Jim Slosiarek/The Gazette via AP, Pool)

Cristhian Bahena Rivera, center, is taken out of the courtroom after the announcement of the verdict in his trial, Friday, May 28, 2021, at the Scott County Courthouse in Davenport, Iowa. A jury on Friday found Bahena Rivera guilty of first-degree murder in the stabbing death of Mollie Tibbetts, a University of Iowa student who vanished while out for a run in 2018. (AP Photo/Charlie Neibergall, Pool)

In this September 2016 photo provided by Kim Calderwood, Mollie Tibbetts poses for a picture during homecoming festivities at BGM High School in her hometown of Brooklyn, Iowa. Cristhian Bahena Rivera, the man charged with killing Tibbetts while she was out for a run in July 2018, will stand trial for first-degree murder on Monday, May 17, 2021, in Davenport, Iowa. (Kim Calderwood via AP)

Cristhian Bahena Rivera reacts after the verdict is announced in his trial, Friday, May 28, 2021, at the Scott County Courthouse in Davenport, Iowa. A jury on Friday found Bahena Rivera guilty of first-degree murder in the stabbing death of Mollie Tibbetts, a University of Iowa student who vanished while out for a run in 2018. (AP Photo/Charlie Neibergall, pool)

Assistant Iowa Attorney General Scott Brown, left, and Poweshiek County Attorney Bart Klaver speak during a news conference after the verdict in the Cristhian Bahena Rivera trial, Friday, May 28, 2021, at the Scott County Courthouse in Davenport, Iowa. A jury on Friday found Bahena Rivera guilty of first-degree murder in the stabbing death of Mollie Tibbetts, a University of Iowa student who vanished while out for a run in 2018. (AP Photo/Charlie Neibergall, pool)