Jurgen Klopp has called for peace ahead of Liverpool's meeting with Roma next week after a Reds supporter was left in a critical condition prior to the first leg.

Tuesday's thrilling 5-2 victory over the Giallorossi in the opening 90-minute tussle of the semi-final tie has been overshadowed by events that took place off the field in the build-up to kickoff.

Two Italian males have been charged by Merseyside Police for an attack on Liverpool supporter Sean Cox, who is left fighting for his life after suffering a bleed to the brain.

Liverpool officials are due to hold talks with Italian police and their Roma counterparts on Friday to ensure the safety of travelling supporters in Rome next Wednesday, and Klopp hopes to see the day pass by without any further incident.

"The game on Tuesday night showed the beauty of the game, during the game, and it showed its most ugly face before the game," he told reporters. "When I first heard about it, I cannot describe my emotions in English, to be honest. That should never have happened. It should never have happened before, should never happen in the future.

"We all have to do things to make sure we don't have many more things like that. The solution for it, probably nobody has that. It's unbelievable that something like this can happen. All our thoughts and prayers are with Sean and his family at the moment."

"My whole life, I never thought it's nice they have a fight next to the stadium. I'm sure all involved in keeping people safe do their best, in the modern world it will be possible. I'm not too concerned about that. [Fans must] behave.

"But I really ask for responsibility from everybody. It's a football game, not more, not less. If Roma win the game and go to the final, they will deserve it. If we do, we will."

European football governing body UEFA will reportedly ban Roma fans from away games for one or two matches following this week's attack.