Chelsea were defeated 3-0 in the second-leg by Barcelona at Camp Nou and sent crashing out of the Champions League. However, it was what happened outside the stadium that caused more of an outcry.
Reports emerged at the time that Chelsea fans were hurt outside the stadium, and that stewards and police were involved in brutal treatment of the away supporters.
The 'Blues' have submitted a report to UEFA, after collecting and collating information from fans regarding their experiences at the stadium back in March.
The full Chelsea statement read: ''Following the match, we issued a plea for information to those fans who may have been involved in these incidents.''
''This resulted in an unprecedented response, with a large number of individuals coming forward to complain in relation to poor organisation, lack of crowd control, brutality on the part of stewards and police and exposure to generally unsafe conditions.''
''Chelsea FC takes the safety of our fans, both home and away, extremely seriously, and this is not what we expect when attending events organised by UEFA or its member clubs.''
''We thank those supporters who shared their experiences to help form our report and will now await a response from UEFA.''