Thirty attendees were injured in London during a bonfire celebrating the Jewish holiday of Lag BaOmer. One of the tribal elders reportedly threw smartphones containing lithium ion batteries into the fire as a warning against their "evils" shortly before an explosion erupted from the fire causing 10 injuries with a further 20 injuries coming in the stampede that followed. The tribal elder apparently neglected to heed warnings about the evil within phone batteries triggered by immersion in fire.