A Tennessee man died Friday after falling from the upper level of the Georgia Dome in Atlanta during the Chick-fil-A Kickoff game between Tennessee and North Carolina State.
Isaac Grubb, 20, of Lenoir City, Tennessee, fell 35 feet and landed on another person seated in the mezzanine area about 8:30 p.m. ET, according to CBS News.
After the accident, Grubb and the person he fell on were taken to Atlanta Medical Center, where authorities said Grubb died from injuries in the fall. He was pronounced dead just before midnight.
Authority spokeswoman Jennifer LeMaster said the other unidentified person was treated and released.
The Georgia World Congress Center police are investigating the incident. Authorities said they are still trying to figure out what led to Grubb's fall. It is not known if alcohol was involved.
Witnesses who were near Grubb when he fell said he was sitting behind the end zone.
"Tennessee had scored a touchdown -- I believe it was the second. There were three people who weren't with (our group). It looked like (Grubb) was doing a fist pump, and then he was gone over the top," William Coates of Arkansas told WSB-TV in Atlanta. "He wasn't moving. His chest was moving a little.
"He was just laying there (in the section below) between rows. It took like 15 minutes for the medical workers to get there."
Kellie Wilborn, another witness, said "everyone's reaction was kind of really freaked out about what happened. Everyone tried to run to the side, but security was pushing everyone back and clearing the area out, so people couldn't like look over."
Grubb's death comes just days after a 25-year-old Houston Texans fan died after falling about 60 feet from a fifth-floor escalator at Reliant Stadium.