POLAND (III Liga Bałtycka): Gwardia Koszalin - Kotwica Kołobrzeg 29.05.2013
Derby in Polish III Liga Bałtycka (4th league). On halftime masked Gwardia supporter entered pitch as as a photographer, took out flammable liquid, split over Kotwica banner and burned it with flare. Angry Kotwica supporters tried to catch him, but he ran.
You can see the "burning" in the end of this video: