Three Colorado high school students have been charged with first-degree murder in the death of 20-year-old Alexa Bartell. The suspects, Joseph Koenig, Nicholas "Mitch" Karol-Chik and Zachary Kwak, are facing multiple counts of assault, attempted murder and first-degree murder with extreme indifference. The charges stem from an incident on April 19 when the suspects allegedly threw a large landscaping rock at Bartell's car, killing her. The suspects are currently being held in the Jefferson County Jail and are awaiting trial.