The Minneapolis teen who shot and killed a five-year-old boy in North Minneapolis last summer was sentenced to 28 years in prison Tuesday. 

Stephon Shannon, 17, pleaded guilty to second-degree murder in association with a gang late Thursday for the killing of Nizzel George on June 26. Shannon admitted to shooting into the home of George's grandmother and hitting George, who was not his intended target, as he slept on the couch. 

Christiana Banks, George's mother, and Susan McCoy, Shannon's grandmother, both said they thought the sentencing was too light. 

Minneapolis Police said Shannon and Julian Kijuan Lamar Anderson, 15, both shot at the house because they thought someone who lived there had tried to shoot them earlier that day. Shannon was a member of a group called "The Skitz Squad." 

Police are not sure which one of the two teens fired the shot that hit George. 

Anderson is also facing trial, and a judge ruled he could stand trial as an adult. His trial is on hold because he is appealing that ruling to the Minnesota Court of Appeals.