FORT CARSON, COLO. -- Twenty-one-year-old Robert Marko is charged with first-degree murder and sexual assault in the case of Judilianna Lawrence.
He's being held in the El Paso County Jail without bond.
Specialist Marko joined the army in June of 2006.
He's assigned to Fort Carson's Fourth Brigade, Fourth Infantry Division.
He served in Iraq from January of 2007 to February of 2008.
He told authorities that he exchanged several messages with the victim using his Myspace account.
Through his web site and other Internet sites, FOX 21 News learned more about him.
Specialist Robert Marko's MySpace page shows him in Iraq.
There are several pictures of himself, his weapons, and his mission, but the site also reveals much more.
Marko writes quote, "I'm pure blooded Black Raptor born as human and one day will join the ranks of my fellow people, until till (sic) them I will keep fighting against humans and will do so till the day I die.... I'm becoming a cold hearted killer and can kill without mercy or reason."
Marko's Myspace user name is Rex-290.
On another web site, Rex-290 posts an ad saying quote, "I'm looking for female slave in Colorado Springs region."
He says he's seeking, "Someone who will do as I say and not question me too much."
"I'm looking for just about any kind of female that likes pain."
Other postings are extremely graphic, involving sex and violence.
On another site, he lists his "likes" as "paintball, snowboarding, and death."
And quote, "One day I would like to meet death."
Robert Marko will be back in court October 20.
Click on the movie camera/video icon to view the segment as it aired on FOX21 News.
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