Arsenal and Leeds have jointly condemned the abuse that was directed at both Nicolas Pepe and Ezgjan Alioski by supporters.
Pepe was sent off for Arsenal against Leeds on Sunday for headbutting Alioski.
The latter was accused of making a meal of the incident, and VAR was used to confirm the Pepe red card.
Both players were targeted on social media, and their clubs were not happy.
"We utterly condemn the vile abuse directed at Nicolas Pepe and Ezgjan Alioski on social media," said Arsenal in their statement.
"This is completely unacceptable."
Leeds referred to it as "vile" abuse that must "not be tolerated."