HOW WAS SUCH A YOUNG KID MURDERED?

It was a bright sunny day and Christian wanted a friend to stay the night. Wilson just moved in the neighborhood and was looking for friends. Christian came along and invited Wilson. They played all day and had a lot of fun. Then it was bed time, Wilson told Christian goodnight without brushing his teeth that day. And Christian Vuong did not wake up the next morning. Wilson is unsure of what happen and might be facing life in prison for this unknown crime. How did Christian Vuong die?