Engineers from energy supplier Ecotricity are investigating why a blade more than 20 meters (66 ft) long fell off the turbine at a wind farm in Conisholme Fen, Lincolnshire, early on Sunday morning. In the meantime, locals are coming to their own conclusions after many of them saw strange flashing tentacle shaped lights above the wind farm on the night before the damage occurred.John Harrison, a resident of nearby Saltfleetby, said he looked out of his window on Saturday night to see “a massive ball of light,” and “tentacles going right down to the ground” over the site. “It was huge” he said “At first I thought it must have been a hole where the moon was shining through but then I saw the tentacles – it looked just like an octopus.