Wenger said he was expecting the contest to be postponed but said he was unsure if the confusion was to blame for his side's poor start.
Cologne took the early lead in the game when Jhon Cordoba lobbed fellow Colombian David Ospina from 40 yards.
"It was all kind of speculation that we had to analyse".
"We live in a society of 100 per cent security and I thought they would never take a gamble to play this game when I saw the images around the stadium".More news: No way, Jose: Hurricane slightly weakens in Atlantic
The North London side were due to be facing FC Koln of Germany at the Emirates Stadium but trouble, seemingly due to additional away supporters trying to get into the crowd, has pushed the start back by an hour.
"Arsene Wenger's team have not picked up a point or scored a goal in their two games on the road so far this season but at least we know they can not play as badly as they did at Anfield in their last away game!"
"I think the best way to do it is through the Premier League", Wenger told a news conference before Arsenal host Cologne in their Europa League opener on Thursday.
"But I must say, our supporters dealt well with the situation around the stadium as well".
Arsene Wenger suggested Koln fans may have done this by subscribing to Arsenal membership online but the Gunners have revealed they closed this option off to fans prior to the Europa League draw being made last month.More news: Conte pleased with Hazard's timely return
There are only seven players for sure that we know won't be out there, as those seven are bonafide first-teamers that weren't in training this past week.
"Yes, they are known for their very passionate support".
'For us and for them it's a big game because we are third in the table.
"In the second half I believe our team was better balanced and better equipped going forward", Wenger said.
The Chilean, who had a sluggish first half, cut in from the near touchline and somehow curled an unstoppable shot into the far corner.More news: Trump Praises Malaysia's Purchase of Boeing Jets, Fight Against Terrorism