Arrest made in disappearance of Iowa jogger

Officials are working to positively ID a body that was discovered in Iowa on Tuesday as missing college student Mollie Tibbetts.
2:05 | 08/21/18

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Transcript for Arrest made in disappearance of Iowa jogger
Breaking developments involving that case making national headlines authorities coming with the cameras late today with news on that missing college student in Iowa. Police now revealing may have found the body of Molly tidbits she vanished while jogging more than a month ago. Authorities with a suspect in custody at this hour and they say he was in the US illegally. ABC's Alex present. I would tonight. Tonight after a month of searching you know rest in the disappearance of Molly tidbits authorities charging 24 year old Christian Rivera. Investigators say is an undocumented immigrant from Mexico with first degree murder. The suspect himself police say leading them to the rural area where police say he dumped her remains she was found and a horror film. Then there were corn stalks placed over the top of her the University of Iowa student was last spotted going for a rider near cornfields is July 18. According to investigators Rivera followed Molly and abducted her about ten miles from where she was living in Brooklyn he ran alongside of her. Or behind her. And then she took off running he in turn chased her down. This video capturing her smiling just days before her disappearance. Her emotional families spending much of the last 34 days asking for the public's help. Pleading for her return. Mean there. Come home. Investigators had been working around the clock says she mysteriously vanished as the FBI helping investigators zero in on her digital footprint and location information. From our fit bent. But authorities today revealed it was surveillance video captured our neighbor's camera that help them track the suspect down. The video was critical of them that way. And Alice Frist joined us live from Brooklyn Iowa tonight and Alex the suspect led the police to Wear body but no word on a motive yet. That's right David authorities say the suspect this morning led them to her remains and confessed to the crime but when asked to lead investigator about a possible motive on this case. He says they can't reveal those details just yet David all right Alex pres tonight Alex think.

This transcript has been automatically generated and may not be 100% accurate.

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