The driver involved in last week’s fatal crash that killed a Highlands Ranch teenager on his way to middle school has been arrested, the sheriff’s office announced Wednesday.

Alex Mackiewicz, 13, was crossing the intersection of Venneford Ranch Road and Highlands Ranch Parkway on his way to Mountain Ridge Middle School the morning of March 6 when the driver of a van ran a red light and collided with the teenager.

Mackiewicz died at the scene.

The driver — 52-year-old Ruben Amaro-Morones — was arrested Wednesday on suspicion of careless driving causing death, careless driving causing serious bodily injury and failing to obey a traffic signal, according to a Wednesday news release from the Douglas County Sheriff’s Office.

Amaro-Morones was traveling eastbound on Highlands Ranch Parkway in the far right lane as he approached the intersection and had a red light, the release stated.

When Amaro-Morones ran the light in his van, he collided with Mackiewicz and threw the boy from his electric skateboard before coming to a stop on the opposite side of the intersection, according to Wednesday’s release.

According to the release, Amaro-Morones was arrested Wednesday and transported to the Douglas County Detention Facility.

Investigators do not believe that speeding was a factor in the crash, the sheriff’s office stated in the release.

“This was a tragedy that has impacted not only Alex’s family but the entire Highlands Ranch community,” Sheriff Darren Weekly stated in the release. “As the sheriff, I take traffic safety very seriously, and we will continue to work hard to make our roadways safer through public education and traffic enforcement.”

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