Football fan falls 35 feet, later dies

Juston Burris of North Carolina State breaks up a pass intended for Tennessee's Justin Hunter on Friday at the Georgia Dome.

• The incident occurs at North Carolina State and Tennessee game
• The victim was 20
• "It looked like [he] was doing a fist pump, and then he was gone over the top," fan says

Atlanta (CNN) -- A spectator died Friday night after falling 35 feet during a college football game at the Georgia Dome in Atlanta, authorities said.

The incident occurred during the North Carolina State and Tennessee game.

Isaac Grubb, 20, fell from an upper level of the stadium, according to the Fulton County Medical Examiner's Office.

A shocked fan told CNN affiliate WSB that Grubb fell right after Tennessee had scored a touchdown.

"It looked like [he] was doing a fist pump, and then he was gone over the top," William Coates said. "He was just laying there between rows. He wasn't moving. His chest was moving a little."

Grubb died later in a hospital.