PREVIOUS: Authorities in southern Illinois are continuing to search for an 18-year-old Carmi woman.
Officials say the unnamed teen is presumed dead after she disappeared in Rend Lake on Labor Day. Friends say she slipped under the water in Franklin County.
Rescue crews searched for eight hours on Monday. The Franklin County Sheriff says authorities don't believe alcohol or drugs played a role and don't believe foul play was involved either.
We will bring you updates as we receive them.