He is also known for his threats to South Park creators Trey Parker and Matt Stone for their depictions of Muhammad in an episode of that series.

[7] In his 2008 book on terrorism, Brachman coined the term "jihobbyist" for people such as Chesser, who are fascinated by Islam or jihad but were not members of recognized terrorist organizations.

He corresponded by e-mail with Anwar al-Awlaki, a radical American Muslim cleric who was then in hiding in Yemen who U.S. officials allege has encouraged homegrown terrorism.

[6] In 2009, both friends and members of the Islamic Center of Northern Virginia noticed that Chesser's views were becoming more extreme; he had conservative ideas about dress customs.

[5] In April 2010, Chesser wrote an e-mail to Fox News, saying that he sought to "raise awareness of the correct understanding of key Islamic beliefs".

He further wrote in the e-mail: I seek to help the world understand that neither the Muslims in general nor the mujahideen including Al Qaeda are abject to peace, but that this peace come with the following conditions: a complete withdrawal of non-Muslim forces from Muslim lands, an ending of the propping up of the apartheid regime of Israel, and a ceasing of the propping up of the brutal dictators we currently have who refuse to rule by divine law.

[10] In April 2010, Revolution Muslim's website posted a statement jointly drafted by Chesser under the online username Abu Talhah al-Amrikee and Morton that warned South Park creators Trey Parker and Matt Stone of violent retribution for their depictions of Muhammad.

[12] Chesser threatened the South Park creators on a variety of other online platforms, including his blog and Twitter pages.

[15] On October 20, 2010, Chesser pleaded guilty to three felonies: communicating threats to Parker and Stone, soliciting violent jihadists to "desensitize" law enforcement, and attempting to provide material support to a designated foreign terrorist organization.

[18] The report traced Chesser's upbringing in Virginia, his lack of direction, his attraction to minority beliefs and attention-seeking, and his rapid transformation into a convicted terrorist.

[1][19] He was then transferred from ADX and to United States Penitentiary, Florence High in Fremont County, Colorado for a short period.