(AP) — Authorities have filed a misdemeanor motor vehicle homicide charge against a semi tractor-trailer driver for a crash that killed a 13-year-old boy.

Kevin P. Monahan turned himself in to authorities on Friday, and was released after posting $1,000 for bail. Cass County Attorney Nathan Cox says Monahan was charged on Thursday.

Authorities say Monahan was driving a semitrailer on July 19 when it struck three cars that were stopped in a construction zone on U.S. Highway 75 near Plattsmouth. The crash killed 13-year-old Nathan Houfek, and injured his mother, Kelley Houfek, and his 12-year-old sister Georgeann Houfek.

Cox says neither drugs nor alcohol were involved in the crash, or else the charge could have been classified as a felony.

Monahan’s arraignment is set for Dec. 3.