WASHINGTON, D.C. — A special-needs student was left on his school bus on Monday morning in nearly 90-degree heat, News 4 reports.

The boy, a second-grader, pried open the bus doors and left the bus, and was found by a passerby, who took him to school, according to the news source. The bus that the boy rode on had been at a lot a few blocks away from his school.

Arnise Grinage, the boy’s mother, told News 4 that her son apparently fell asleep on the ride to school. She watched her son board the bus around 7:30 a.m., and learned about the incident in a phone call from her son’s school three hours later, saying that he had just arrived at the school.

The Office of the State Superintendent of Education, which provides school bus service to special-needs students in Washington, D.C., told News 4 that its policy is that bus drivers walk up and down the aisles of their buses to check for riders before leaving the bus, and that it is investigating whether that happened in this case.

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