TOPEKA, Kan. (AP) — A 40-year-old Topeka man has been sentenced to at least 50 years in prison for the brutal murder of his mother four years ago in the home they shared.

The Topeka Capital-Journal reports Jason Hachmeister was given the Hard 50 sentence Tuesday in Shawnee County District Court. He will serve the sentence concurrently with an earlier prison sentence for child pornography.

A jury convicted Hachmeister in February of premeditated first-degree murder in the slaying of his 58-year-old mother, Sheila Hachmeister, on Sept. 10, 2011.

District Judge Richard Anderson said Hachmeister never took responsibility for repeatedly stabbing and then strangling his mom, so he didn’t deserve mercy in sentencing.

The sentence means Hachmeister won’t be eligible for parole until he is 90 years old.