Arsenal investigate anti-Semitic statements from fans at North London Derby
The clubs said in a statement that anyone identified would receive a lengthy club ban, and their details would be passed to the police.
"There was an incident at the North London derby on Sunday involving Arsenal supporters in which one of our fans overheard grossly offensive anti-semitic statements made by another Arsenal fan. On the same afternoon, we were appalled to hear of an incident at The Cally pub in Islington, involving other anti-semitic chants," the club said in a statement.
"We recognise the impact this behaviour has on our many Jewish supporters and others and condemn the use of language of this nature, which has no place in our game or society."
Arsenal won the game 2-0 after an own goal from keeper Hugo Lloris and a long-range drive from Martin Odegaard.