Mack is the third Irish player suspended this week.
Yesterday, Notre Dame suspended wide receiver Kevin Stepherson and running back C.J. Holmes indefinitely, reportedly for shoplifting.
Today, head coach Brian Kelly announced that tight end Alize Mack has been suspended for the upcoming Citrus Bowl against LSU.
Macl's punishment is due to an "internal team matter" unrelated to Stepherson and Holmes' indiscretions.
Mack was academically ineligible for the entire 2016 season. He returned to the field this fall, making six starts and appearing in 10 games. Mack caught 19 passes for 166 yards and a touchdown.
Notre Dame and LSU will meet in the Citrus Bowl on Jan. 1.