Steelers' Metcalf swings at Lions fan in stands

Pittsburgh Steelers wide receiver DK Metcalf threw a punch at a fan wearing a Detroit Lions T-shirt in the stands at Ford Field during Sunday's game.

The incident took place late in the second quarter with Detroit nearing the red zone. The Lions scored a touchdown moments later.

It's unclear what led to it, but the Lions spectator involved in the altercation was holding a Steelers jersey before the incident, according to Tracy Wolfson of CBS Sports.

NFL officials can't weigh in on Metcalf's altercation with the fan if they didn't see it during the game, retired NFL referee Gene Steratore said during the broadcast. Footage will be delivered to the league for potential discipline next week.