The move came after the Polish club was sanctioned by UEFA for racist behavior during an earlier match. The fans held up a sign that read "UEFA Ultra Extreme Fanatical Atmosphere" before the flares were lit.
The entire scene was surreal and it is amazing that they even played the match. The game ended in a draw which allowed Steaua Bucharest to advance to the next round.
Here is the video via Yahoo! Sports...
And here is the moment the flares were lit (via @KickTV)...