NORTHWOOD, Iowa — A Northwood, Iowa, man pleaded not guilty to vehicular homicide charges after he allegedly struck and killed a 7-year-old girl attempting to board a school bus in May.

Aaron Dwayne Gunderson, 31, appeared in Worth County District Court Friday on two counts of vehicular homicide and one count of leaving the scene of a personal injury accident resulting in death. One of the counts of vehicular homicide involves allegedly being intoxicated at the time of the crash.

Gunderson was reportedly driving faster than 60 mph on May 10 when his red Chevrolet Silverado struck and killed Kadyn Halverson of rural Kensett at 4336 Raven Ave, according to court documents.

The school bus Kadyn was going to board was completely stopped and had its flashing red lights and stop arm activated.

A daycare provider dropped Kadyn off about 25 feet west of the roadway.

Gunderson allegedly failed to stop for the flashing lights and extended stop sign of the bus and then struck Halverson, before continuing southbound, without stopping at the scene of the crash.

Kadyn died at the scene.

Gunderson was apprehended later that day and tested positive for marijuana use. According to court documents, he admitted using marijuana five days prior, but levels of the THC shown in the blood were consistent with more recent use.

He also reportedly stated he suffered from an eye disorder and that he should not be driving.

His trial has been scheduled for Dec. 7.