Authorities say that one child was killed and four others were seriously injured on Sunday morning in a three-vehicle crash involving a school bus on I-40 in Arizona. Arizona Department of Public Safety Sgt. Jesus Gastelum said in a press release that the collision took place around 9:27 a.m. in Apache County, when the school bus was rear-ended by a commercial semi-truck going eastbound at mile marker 328.

DPS said that eastbound traffic was slowed at the time due to a previous collision that morning, of a single commercial vehicle rollover. Gastelum said: “Due to the impact, the school bus was pushed into the van.”  According to DPS, there were 19 people on the school bus at the time, with one child killed and “four other school bus occupants sustained serious injuries.” It was not immediately clear if the injured occupants were also children. There were no other serious injuries reported, and an investigation is ongoing, Gastelum added.

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