Chelsea have submitted a formal complaint to UEFA following the ugly incidents which unfolded at the Camp Nou after their loss to Barcelona last month.
The Blues were knocked out 4-1 on aggregate by the Spanish side, firstly drawing 1-1 at Stamford Bridge then losing 3-0 away on Barca's home ground.
After the match, video footage emerged, showing Blues fans getting shoved and beaten by stewards, who are also accused of pushing them towards a mob of violent Barca fans who assaulted them while police officers watched on and did nothing.
The club had asked fans to come forward with complaints; and having received a great many, they have now taken their findings to UEFA and will await a response.