
Iran's Persepolis will encounter Al-Sadd of Qatar at the AFC Champions League semi-finals in 18:30 local time, with nearly 90,000 spectators stationed at Azadi Stadium to watch the match.
Despite the announcement of AFC officials, a large number of fans are sitting in the corridors of the stadium, and many are standing for start of the game.
This raises concerns for authorities on the occurrence of unfortunate event for the audience.
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