Lansing – A young mid-Michigan man who pleaded guilty but mentally ill to killing his mother while she slept has been sentenced to at least 17 years in prison.

The Lansing State Journal reports 20-year-old Andrew Willson was given his punishment Wednesday in Ingham County Circuit Court after entering the plea in October to charges including second-degree murder. In exchange for the plea, a first-degree murder charge was dropped.

Willson apologized, saying his misses his mother “so much.”

His mother, 51-year-old Lisa Willson, was found shot in the head at their home in Ingham County’s Wheatfield Township on Sept. 8, 2017. Willson’s attorney has said that at the time of the shooting Willson was in the midst of a major depressive episode and had been hearing voices ordering him to kill her.

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