MINNEAPOLIS (AP) –The mother of 11-year-old Jacob Wetterling tells her son’s killer he didn’t need to hurt him.

Patty Wetterling and other members of her family spoke in federal court in Minneapolis on Monday before 53-year-old Danny Heinrich was sentenced to 20 years in prison under a plea bargain. He led authorities this summer to where he buried Jacob’s remains 27 years ago after kidnapping, sexually assaulting and killing the St. Joseph boy.

When he confessed in court in September, Heinrich quoted a handcuffed Jacob as saying, "What did I do wrong?"

Patty Wettterling told Heinrich that Jacob "did nothing wrong. He just wanted to go home."

She told her son’s killer she won’t "waste a minute of time" thinking about him "from this day forward."