Tempers flared during an interaction between Bills defensive players and an Eagles fan during Philadelphia’s 37-34 overtime win over Buffalo on Sunday.

Defensive end Shaq Lawson appeared to shove the fan during a heated exchange at Lincoln Financial Field, according to a video that’s making rounds on social media.

It came after defensive tackle Jordan Phillips and other Bills players — Lawson, defensive tackle Ed Oliver and defensive end Greg Rousseau — walked over to the front row of stands behind their bench and were seen chirping back and forth with Eagles fans.

It’s unclear what was said during the interaction, but NFL fans are buzzing about Lawson appearing to make contact with the fan, who was seen wearing a black puffy jacket and a green hat.

Lawson, 29, was pulled away from the fan by his teammates while some Philadelphia faithful booed.

Warning: Graphic Langauge

Someone can be heard yelling, “F–k you,” while flipping a middle finger in the direction of the Bills players.

Security in neon jackets nearby were seen stepping in between the players and the fans to prevent the situation from escalating.

It’s unclear if any fans were confronted or disciplined by stadium security.

Lawson — the former first-round pick — could be fined by the NFL if the league opens an investigation.

The league has yet to address the matter as of Monday morning.

The NFL has established rules regarding fan and player conduct.

Players can interact with fans in certain situations, such as touchdown celebrations, however, this circumstance is different.

The Bills (6-6) have a bye in Week 13 before visiting the Chiefs (8-3) on Dec. 10.