Robert, Lori, Parker, and Tammy DeLong killed in rollover accident in McLeansboro, Illinois

A teenager involved in a wreck in southeastern Illinois late Saturday night has been pronounced dead. Four others had already died in the incident. According to the Hamilton County Sherriff, six people were inside a Chevy Trailblazer when it lost control and flipped several times in McLeansboro, Ill. at 10:24 p.m. Five people were ejected from the vehicle when it flipped, with one person trapped inside wearing a seatbelt. Police said three of the people killed were family members. The victims were identified by police as Robert, 49, and Lori, 42, Parker and Tammy DeLong, 23, from Collinsville, Ill. The fourth victim was 23-years-old Diana Wright. A 16-year-old who attended Collinsville High School was also killed in the accident. Authorities reported a sixth passenger in the vehicle, Darrell Delong, 49, was airlifted to the hospital. The extent of his injuries is unknown. According to Illinois State Police, only Robert Parker was wearing a seatbelt. McLeansboro, Illinois is 110 miles southeast of St. Louis. Police said the accident happened in the Hamilton County Road 750E. Police are still investigating the cause of the accident.