LANCASTER, S.C. (AP) -- Lancaster County deputies said a mother of three young children has been shot to death in her home.Authorities said neighbors of 23-year-old Jenika Jones called 911 Thursday night after her 4-year-old son came running to their home, beating on their door.Investigators said Jones was found dead on her couch, shot in the chest. Two other younger children were also found in the home.Witnesses said they saw three men in hoods running from the house.Lancaster County Sheriff Barry Faile said his deputies have leads, but no arrests have been made.