Police say four people, including 11-year-old Shamiya Adams who was at a sleepover with friends have been killed.  Shamiya was stuck by a stray bullet in the head while at a West Side Chicago home on Friday evening. The kids at the sleepover were getting ready to make s'mores.

At least 40 people have been shot over the weekend in the Chicago area.

READ MORE: nbcchicago.com