DURHAM — Some Duke fans taunted N.C. State freshman Tyler Lewis about his late grandmother during Thursday’s game, his father said Friday.

Lewis went to the foul line at 13 minutes, 47 seconds of the second half of the loss at Duke. Most fans in the Duke student section at Cameron Indoor Stadium chanted, “Past your bed time,” a playful jab at Lewis’ youthful appearance.

Other Duke fans, according to Rick Lewis, chanted “How’s your grandma?”

Margie Lewis, Rick’s mom and Tyler’s grandmother, passed away on Feb. 1. Rick Lewis was at the game, sitting behind N.C. State’s bench.

“It was mostly ‘Past your bedtime,’ but there was an instant when a brief number of students chanted about Tyler’s grandmother,” Rick Lewis said. “It wasn’t the entire student section, I think a few tried to outdo themselves.”

Duke fans had serenaded Lewis earlier in the game with a “Bilbo Baggins” chant, a “Hobbit” reference. Lewis, making his first career start, scored 13 points and finished with six assists and no turnovers in 39 minutes.

Duke associate athletic director Jon Jackson said the school spent Friday morning trying to find people in the building who heard the chant but had not yet found anyone.

Lewis’ dad said he would rather the focus be on his son’s play the past two games, with N.C. State missing injured point guard Lorenzo Brown, rather than the misbehavior of a few fans.

Lewis has averaged 14.5 points and 5.5 assists in Brown’s absence.

“It’s time to move on, in my opinion,” Lewis said. “No need to make it more than a few immature comments by a few select fans.”