(KNZA)--A Topeka man was killed late Thursday evening in a single-vehicle rollover crash in Jefferson County.

The Kansas Highway Patrol says it happened on U.S. 24 Highway, southeast of Williamstown, near 5th Street and Phillips Road.

According to the KHP, 59-year-old Ahijah Adams was westbound on U.S. 24 when, for an unknown reason, he failed to negotiate a curve and his GMC pickup truck left the roadway.  The vehicle overturned multiple time, ejecting Adams.

Adams, who was the sole occupant, was pronounced dead at the scene.

The Patrol says it was not wearing a seat belt when the crash occurred shortly after 10:00.