WATERLOO, Neb. (AP) — The Douglas County attorney’s office has cited a Fremont man who was driving a pickup truck that hit and killed a motorcyclist last month.

The Douglas County Sheriff’s Office announced Wednesday that 30-year-old Jonathan R. Mumm voluntarily came to the sheriff’s office, where he was issued a misdemeanor citation charging him with motor vehicle homicide. He was then released.

The citation followed a May 30 crash in western Douglas County that killed Scott C. Petersen, a 37-year-old off-duty Omaha firefighter.

An investigation indicated a pickup truck driven by Mumm crossed the center line of the roadway, causing the crash.

A telephone call left with Mumm wasn’t immediately returned.