Arsenal legend Thierry Henry insists Chelsea cannot be blamed for last month's Paris Metro incident.

A group of supporters were filmed refusing to allow a black man on to a train following the Blues clash with Paris Saint-German last week.

But speaking on the Jonathan Ross show, Henry said: "You can't have a go at Chelsea because it is difficult to control who is going to travel.

"I've played games away from home in Europe, in countries that are not very clever. A lack of education can be the thing.

"You play a game and you try to concentrate and keep your composure and what you hear sometimes is 'black this' and 'monkey' and monkey chants, and people spitting at you when you take a corner kick.

"It is not easy, it is not easy. That has to stop and what has to be done for it to stop? I don't know. You need to have a zero tolerance, I believe in that.

"I did encounter it and it is not easy to deal with, I'm telling you. I'm a human being and that's not the type of thing you want to hear."