Jefferson County jurors on Friday found Joseph Koenig guilty of first-degree murder in the killing of Alexa Bartell during a rock-throwing spree two years ago.

After a jury's guilty verdict was announced in the deadly rock-throwing trial, friends and relatives of the victim who were in the courtroom broke out in tears.

One of three defendants, charged with throwing a large landscaping rock that killed 20-year-old Alexa Bartell while she was driving in Jefferson County, was found guilty of all charges against him on Friday including murder in the first degree and multiple attempted murder charges.