In a tragic incident that shocked the Denver community, a Colorado teen has pleaded guilty for his involvement in a deadly rock-throwing spree that claimed the life of a 20-year-old woman. Zachary Kwak, 19, was one of three teenagers responsible for throwing landscaping rocks at several cars in April 2023.

According to Fox 31, Kwak pleaded guilty on Friday to one count of first-degree assault, one count of second-degree assault, and an additional count of criminal attempt to commit assault. Initially charged with murder, Kwak accepted a plea deal that will result in a sentence of no less than 20 years, but no more than 32 years. His sentencing is scheduled for September 3.

The incident occurred when Kwak, along with Joseph Koenig and Nicholas "Mitch" Karol-Chik, threw rocks at six different vehicles, injuring multiple drivers after 10 p.m. on April 19. The three suspects, who were all 18 at the time, had earlier met up and went to Walmart together to obtain landscaping rocks from the store's parking lot.

As the night progressed, the trio allegedly targeted multiple vehicles, eventually leading to the tragic death of Alexa Bartell, who was driving while talking on the phone with a friend. The investigator testified that the suspects were driving at a high speed of approximately 80 mph when one rock smashed through Bartell's windshield, causing her abrupt and tragic demise.

Following the fatal incident, the suspects turned back around and drove past Bartell's vehicle, which had swerved into a field, to observe the damage they had caused. In a disturbing revelation, it was alleged that Kwak took a photo of the victim's vehicle as a "memento."

During the investigation, it was revealed that Kwak and Koenig were the only two suspects accused of throwing the fatal rock. Bartell's friend used a phone-finder app to locate her stationary vehicle in a field off Indiana Street in Jefferson County and immediately alerted the authorities.

The court proceedings were emotional, as Bartell's family, dressed in a state of grief, were present to hear Kwak's guilty plea. Tears were seen streaming down their faces during the 15-minute hearing.

Prosecutors shared that the trio had engaged in rock-throwing activities for approximately two months prior to the incident that resulted in Bartell's death. The cases involving Koenig and Karol-Chik are still ongoing, and all three were initially charged with first-degree murder with extreme indifference.

This devastating incident serves as a reminder of the potential dangers posed by reckless acts of individuals. As the community mourns the loss of Alexa Bartell, the legal proceedings surrounding the case continue as the responsible parties face the consequences of their actions.