 Hausner was in charge of the wiring of the explosives.Twelve hours into the occupation, the explosives (15 kilogrammes of TNT) were apparently accidentally detonated.In the documentary film "Stockholm 75", fellow Kommando Holger Meins member Karl-Heinz Dellwo discussed the explosion and explained that only he and Siegfried Hausner were in a position near the detonator to trigger it and that he did not know why it exploded, only that he didn't activate it.