Looks like Cristhian Bahena Rivera who killed Mollie Tibbetts is a Sleeper Cell. Worked for Craig Lang who was previously President of Iowa Farm Bureau Federation, was President of the Iowa Board of Regents, the group that oversees the state's public universities (Mollie was student at Iowa University) Possibly involved with Chinese spies as well…

Lang, who served as president of the Iowa Farm Bureau Federation from 2001 to 2011, wants to expand efforts to promote trade, especially to China, which has reopened its markets to U.S. beef, as well as India and other Asian countries.

He has some experience in that area. While working with the Ministry of Agriculture on agriculture biotechnology in China, Lang signed the first non-governmental organization memorandum of understanding with the Chinese Ministry of Science and Technology on behalf of the Iowa Farm Bureau.

Why Mollie? Who was she or what did they do to her? They didn't want her talking?

https://www.thegazette.com/subject/news/government/lang-launches-campaign-for-iowa-ag-secretary-post-20171221

https://www.heraldstandard.com/news/national/the-latest-suspect-worked-at-farm-tied-to-republican-farmer/article_ea5d0a9b-0f64-5f6d-94f9-87914ed8e400.html

https://abcnews.go.com/US/wireStory/latest-body-found-rural-area-students-hometown-57308988

https://heavy.com/news/2018/08/christian-rivera/