LOS ANGELES (AP) — A driver has been sentenced to two years in prison in the death of a 19-year-old special-needs student left aboard a hot school bus in Los Angeles County.

The district attorney’s office says 37-year-old Armando Abel Ramirez of Rialto was sentenced Monday for felony dependent adult abuse resulting in death.

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Student Hun Jun “Paul” Lee was found on the floor of the bus in a Whittier bus yard on Sept. 11, 2015, a 96-degree day.

According to the prosecutor, Ramirez was a substitute driver for the bus that transported Lee, who could not verbally communicate.

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Ramirez believed Lee got off the bus in the morning but didn’t check the rear of the bus at the end of the first half of a split shift.

Lee was unresponsive when Ramirez returned.

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