Köhler planted an improvised explosive device in a dustbin on 26 September 1980, near one of the entrances to the Oktoberfest; it exploded at 10:19 PM (GMT+1), killing 13 and injuring over 200.
On September 26, 1980, at 10:19 PM GMT+1, Köhler planted an improvised explosive device in a trash bin near the Oktoberfest entrance, causing it to detonate and killing 13 people and injuring over 200.