The controversy lit up social media websites Friday with some accusing fans of chanting "How's your grandma," to NCSU player Tyler Lewis - a freshman guard from Statesville, N.C.
Lewis' grandmother passed away February 1.
But video of the chant posted on YouTube was inconclusive.
Some said the chant was "Past your bedtime" to the youthful looking player.
Other witnesses reported it was just a couple of fans and not the entire Cameron Crazies section.
NC State tells ABC 11 as far as the coaches and athletic department are concerned, they didn't hear "How's your grandma" and they don't believe there was any organized chant on the part of the Duke student section.
Duke never trailed in the game and held off a Wolfpack rally to win 98-85.
N.C. State - the preseason favorite in the ACC - lost its third straight and was denied its first win in Cameron Indoor Stadium since 1995.