DECATUR, Ill. (WAND) - Police said a deadly drive-by shooting in Decatur happened when backseat passengers in the suspect vehicle fired gunshots. 

The shooting occurred early Sunday morning, when two people were found after 3 a.m. with gunshot wounds to their heads inside of a Hyundai Sonata in the 1300 block of E. Walnut St. Demeshionna S. Miller-Fonville, 17, was airlifted from the scene to Memorial Medical Center in Springfield and died form her injuries. Authorities said the 17-year-old male had life-threatening injuries and they did not believe he would survive, but the family told WAND News he is doing better. 

The affidavit said police reviewed camera footage and found a red Chevrolet Impala in the area at the time of the shooting. They traced the vehicle to an address on Oakley Road. 

Police said they learned Celeste S. Bowman went with a 16-year-old minor to the 300 block of E. Stuart St., where they picked up 20-year-old Quantarius S. Beasley, 20-year-old Dreylynn M. O'Neal and 21-year-old Bryan C. McGee. The group drove around with Beasley driving and went to a gas station and U-Top parking lot to hang out with people. After that, they went to East Walnut Street, and the affidavit said the rear passenger side window was rolled down and shots were fired out of the window. 

The group continued to drive around and Beasley, O'Neal and McGee were dropped off in the 400 block of E. Stuart St. about an hour after the shooting, police said. 

According to the affidavit, one of the suspects told police that two backseat passengers told the driver of the Impala to "drive down Leafland" as they looked for houses associated with the East Side Gang. Police said O'Neal is a known member of the Jumpout Gang in Decatur.

When no one was on Leafland, police said the Impala went to Walnut, where one of the suspects heard gunshots and saw McGee hanging out the rear driver's side door while shooting at a vehicle in the road. The suspect said they believed O'Neal was also firing shots and was observed to be in possession of a black semi-automatic pistol before the shooting. 

All of the suspects outside of McGee have been arrested on first-degree murder warrants. McGee remains wanted Tuesday afternoon and should be considered armed and dangerous, police said.Â