THE mystery of strange lights hovering above the Calder Valley may have been solved by two teenagers.
The spooky lights caused a stir in Calderdale when they were spotted illuminating the Mytholmroyd skies on August 11.
Could they have been from an aeroplane or something more alien?
Amy Cheetham, 19, of Halifax, and Louise Neil, 18, of Hebden Bridge, believe they were in fact just fly-away Chinese lanterns.
The pair were out walking when they spotted the curious lights.
Amy said: "We were walking the dog when we saw what appeared to be little hot air balloons made of paper, like Chinese lanterns. There were about six and it was obvious they had been lit.
"I just thought it was a bit weird. Louise told me about the UFO story and I couldn't believe it.
"They are definitely not UFOs.
"I think we have probably solved the mystery."
The incident has been causing quite a furore since it was reported in the Courier.
Mark Jefferys, of Ashton Road, Mytholmroyd, said sons Matthew, 12, and Liam, 13, thought they could be UFOs.
"It couldn't have been helicopters because they were orange lights, not white," he said.
Gemma Kipping, of Todmorden, said she spotted the same activity two weeks before.
She was in her garden when she saw four lights above.
"I thought they could have been hot air balloons but who would be out in a balloon at night?"
And ex-RAF avionics technician Chris Granger, 45, of Vale Mill Cottages, Cragg Vale, told us: "They moved in a very erratic manner and did not display the flight characteristic of a conventional aircraft. Nor did they display the normal lighting array of a conventional aircraft – flashing white strobe, and red and green navigation lights."