Friday 3 October 2014 04:17, UK
Arsenal are one of a number of teams being investigated by UEFA after crowd disturbances during Wednesday night's Champions League ties.
The Gunners beat Galatasaray 4-1 at the Emirates but the game had to be halted in the first-half when flares were thrown onto the pitch from the section containing the travelling fans.
UEFA view it as the home side's responsibility to search supporters for any illegal items before they come into the stadium which means both clubs may be disciplined.
Metropolitan Police confirmed there were six arrests as part of their operation for the European tie in north London, two of which were for entering the ground with flares.
Arsenal reported damage to around 100 seats in the away end, and will now co-operate fully with UEFA when asked for their observations.
An Arsenal spokesman said in a statement: "Crowd safety is always a top priority for us and we were disappointed with the incidents last night, which occurred despite extensive searches of away supporters as they entered the stadium and close liaison with police, UEFA and visiting club officials."
Flares were also launched onto the pitch from the section where the travelling Borussia Dortmund fans were located during their match with Anderlecht at Constant Vanden Stock Stadium.
Basle may face disciplinary action a battery appeared to be thrown in the direction of the assistant referee from the home fans’ end during Liverpool’s trip to St Jakob Park.
All three incidents will be dealt with by the UEFA Control, Ethics and Disciplinary Body on October 16.
If the clubs are found guilty, UEFA could hit the teams with a fine or order them to play games behind closed doors.
CSKA Moscow’s home game against Bayern Munich was played behind closed doors on Tuesday after the Russian club’s fans were found guilty of racist chanting during a game against Viktoria Plzen last December.
