(KNZA)--After more than a year of delays in the case against him, a December 5 preliminary hearing has been set for a Holton man accused of fatally shooting his father in September 2018.

That came during a status hearing last week in Jackson County District Court for 50-year-old Derrick Bohnenkemper.

Bohnenkemper is charged with one count of first-degree murder, five counts of attempted capital murder and one count of aggravated assault.

He is accused of fatally shooting his 73-year-old father, Gaylen Bohnenkemper, on September 18, 2018.

The elder Bohnenkemper was found inside a residence north of Holton after his son surrendered to authorities following a more than 5-hour armed standoff.

Bohnenkemper also faces two counts of assault on a law enforcement officer and one count of assault in a separate case stemming from a November 6, 2018 incident in the Jackson County Jail.

Bohnenkemper was transferred to the Larned State Hospital a day after the incident after a judge granted a motion filed by his attorney for a competency evaluation.

He was returned to the Jackson County Jail this past summer but no competency ruling has yet been issued.