Wednesday's Champions League match between Roma and CSKA Moscow was briefly suspended in the second half due to fan violence.
With Roma leading 5-0, CSKA supporters began throwing flares at Roma fans and riot police had to intervene.
The match was stopped for approximately two minutes in 71st before it resumed with police taking control from the stadium officials.
There were also reports of skirmishes between opposing fans outside the stadium before kick-off.
CSKA pulled a goal back with the match...