TOPEKA, Kan. (AP) — The trial of a Topeka man charged with killing his mother has been delayed again, and is now scheduled to start next January.

Jason Hachmeister is charged with premeditated first-degree murder in the September 2011 death of his 58-year-old mother, Sheila Hachmeister. She was killed at a home she shared with her son.

The Topeka Capital-Journal reports the trial was postponed on Monday because his attorney, Mark Bennett, is involved in a complex drug case in federal court in Kansas City, Kansas.

Hachmeister’s trial was originally scheduled to start in January of this year.

A coroner has testified that Sheila Hachmeister was stabbed several times but died from strangulation.