These included pipe bombs, carbon dioxide cartridges filled with gunpowder (called "crickets"), Molotov cocktails, propane tanks converted to bombs, car bombs, and diversionary bombs. For ignition, they used kitchen matches and model rocket igniters as well as timing devices built from clocks and batteries for the propane, car, and diversion bombs. During the massacre, they carried lighters as well as match strikers taped to their forearms to light the pipe bombs and crickets. They had 45 crickets, 8 of which detonated, and 9 Molotov cocktails, 2 of which functioned.