CLEVELAND (AP) — A Cleveland-area man will be sentenced in March after admitting to fatally stabbing his 1-year-old son.

The stabbing in 2018 happened not long after Jason Shorter signed a custody agreement with the boy’s mother, and prosecutors think Shorter killed the boy to get back at his mother.

Shorter, 42, pleaded guilty Jan. 3 to aggravated murder and kidnapping charges in a plea deal that allows him to avoid the death penalty.

Prosecutors will recommend a life sentence with a chance of parole after 41 years.

Shorter went to the Parma police station in May 2018 and said he wanted to turn himself in. Officers found his son in the trunk of Shorter’s car and said that the toddler died from stab wounds to the chest.