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STAR, Idaho -- A five-year-old boy who was injured in a rear-end crash near Star Saturday has died from his injuries.

The Ada County Coroner's office is currently working to determine the official cause of the child's death. Officials say they'll release that information, along with the 5-year-old's name, after an autopsy has been completed and all of the child's family has been notified.

A 7-year-old who was also hurt in the crash remains hospitalized with serious injuries. Her current condition and prognosis aren't known.

The crash happened at 10:51 a.m. Saturday at the intersection of Highway 44 and Highway 16.

A 41-year-old woman, of Star, was driving a 1997 Ford Explorer east on Highway 44. For unknown reasons, the driver of the Explorer crashed into the back of a 1998 Dodge Caravan that was stopped at a red light.

Inside the Caravan were a 34-year-old woman, an 8-year-old boy, 7-year-old girl and 5-year-old boy, all of Star. The children were taken to Saint Alphonsus Regional Medical Center, where the 5-year-old later died and where the 7-year-old remains.

Everyone in the minivan was wearing a seatbelt or was properly restrained in an appropriate child safety seat.

The driver of the Explorer and her 14-year-old female passenger were also taken to the hospital with injuries that were not believed to be life-threatening. They were not wearing seatbelts.

The 41-year-old driver is believed to have been moving at highway speeds when she crashed into the back of the Caravan. The posted speed limit is 55 miles per hour in that area.

A portion of the intersection was shut down until about 3:20 p.m. while deputies investigated.

Police are currently investigating the accident, and say they'll decide whether or not to charge the driver of the Ford Explorer once the investigation is concluded.

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