articleThe Brief The GBI has joined the investigation into the 2018 murder of 23-year-old Shanequa Sullivan, whose body was found in the Yellow River in Newton County. Investigators believe Sullivan, who had developmental disabilities and worked as a janitor at the Atlanta airport, was tricked into a vehicle before being killed. The Georgia Bureau of Investigation (GBI) is asking the public for photos and videos as agents search for new clues in the 2018 murder of a vulnerable airport employee found dead in a Newton County river. What we know:According to the GBI, a fisherman found the unclothed body of Shanequa Sullivan in the Yellow River in Newton County in March 2018. While the Newton County Sheriff's Office originally investigated the case in 2018, the GBI officially joined the investigation in 2024.