In 2004, a town in northern Sicily experienced mysterious spontaneous fires that officials purportedly suspected were the result of alien activity. Now the mysterious fires have returned.

The fires are appearing in Canneto di Caronia, a town on the northern coast of Sicily. In 2004, the town had to be largely evacuated and dozens of experts were flown in to investigate. The power company cut off power to the town in order to stop the fires, but they continued.

Scientists, electrical engineers and the military all tried to figure out why the fires were starting, but no one could figure it out. According the UK newspaper The Telegraph, one scientist was amazed when “he saw an unplugged electrical cable burst into flames.”

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