London, Jan 8 (IANS) A giant wind farm turbine in Britain was “wrecked” by a mystery aircraft - probably an alien spacecraft, a tabloid reported Thursday.The Sun said the turbine at Conisholme in eastern England lost a 66-feet blade and had another badly damaged at 4 a.m. Sunday - after locals spotted strange lights streaking towards the 290-foot-high generator.

Local UFO groups said they had many reports of activity in the area while Ecotricity, which owns the site, said it was keeping an open mind.

“We don’t have an explanation at the moment as to what the cause was,” Ecotricity founder Dale Vince told the BBC.

“We have been crawling all over it and have sent bits off for analysis to see if we can work out what caused it. Until we have some idea - some plausible explanation that it was not a UFO, I don’t think we should rule it out”.

“To make one of these blades fall off, or to bend it, takes a lot,” he added.

Russ Kellett, from the Flying Saucer Bureau, said witnesses had told him of activity in the area.

“Balls of light were seen in the sky and the MoD (ministry of defence) has no explanation. We are very, very excited about this,” Kellet said, adding: “To hit two of the blades, any object must have been about 170 feet long.”

The Ministry of Defence said it was not looking into the incident.