A 1-year-old boy died on Sunday (August 25) following a car crash that occurred on Thursday (August 22) in Fort Collins, according to The Coloradoan

The two-vehicle collision happened at the intersection of Carpenter Road and Larimer County Road 9. Riley Santos was flown to Children's Hospital in Aurora, where he eventually passed away.

Another unidentified child was also flown to the hospital, but their injures have not been revealed to the public.

The accident occurred when a 2002 Ford F-350 pickup truck struck a 1998 Ford Explorer driven by Tiffany Burke, 27, who was carrying the two children.

Burke turned left off of southbound South County Road 9 in front of the truck, which was driving eastbound on Carpenter Road.

The truck driver has been identified as 33-year-old Elvis Guerrero.

According to the Larimer County Coroner's Office, Santos died of blunt-force trauma, as he was not restrained in the vehicle. It is not known whether or not the second child was restrained.

Burke was taken to Medical Center of the Rockies in Loveland, although her condition remains unknown. Guerrero did not suffer any injuries in the crash.

The Fort Collins Police Department is currently investigating the case, and charges are pending.

According to Car Seats Colorado, newborns should be in rear-facing car seats up until they are around three years old. For more information on how to properly install a car seat, click here.