Authorities in Iowa have filed charges against an undocumented immigrant on Tuesday in connection to a recovered body believed to be that of 20-year-old University of Iowa student Mollie Tibbetts, who disappeared from her home a month ago.

The details: The suspect, identified as Cristhian Bahena Rivera, 24, is facing a first degree murder charge and life without parole, Rick Rahn, special agent at the Iowa Division of Criminal Investigation, explained in a briefing Tuesday. He's believed to have been living in Poweshiek County area for four to seven years.