Administrators for the schools said several students came forward to say they'd heard about a threat against people going to the football game Friday night.
The administration immediately investigated the threat and decided to postpone the game to a later date.
The school said it found "no concrete evidence...to suggest that a credible threat exists," but still the decision was made to postpone the game.
"After further investigation, we have no reason to believe there was a credible threat and the school environments are considered safe," a schools spokesperson said..
The school district also said school administrators and local law enforcement identified the person believed to be responsible for what other students "interpreted as a threat involving those present at the (now postponed) football game."
Local law enforcement is also involved in the investigation, according to the school's post on social media.
The school also said the students who came forward about the possible threat did the right thing and were a shining example of how everybody should act in the same situation.
The rescheduled date for the East Chapel Hill at Chapel Hill football game has yet to be determined.