Jurors have delivered a guilty verdict for first-degree murder for Joseph Koenig, the Colorado man accused of throwing a rock through the windshield of Alexa Bartell's moving vehicle, killing her.

A man has been convicted of first-degree murder after he and his friends were accused of killing a driver during a night of throwing rocks at cars in Colorado.

Joseph Koenig was found guilty of all charges related to a fatal rock-throwing incident involving Alexa Bartell. His co-defendants testified against him as part of plea deals.