"Passers-by spotted him lying at the side of the road in Koroszczyn, still smoking from the tattered remains of his trousers and groaning in pain.
A police spokesman said: 'Witnesses said he was like a flaming human torch cycling along the road.'"
One hypothesis so far is that the fire could have been caused by a reaction between sweat, the material in his trousers, and friction. We don't think you have to worry too much about this happening to you, but if you feel intense heat down there, it's probably time to take a breather. ::Cyclist’s Trousers Burst Into Flames, ::Hot pants, via :: Cyclist spontaneoulsy combusts. See also: ::World Record: Mark Beaumont Circles the Globe on his Bike in 195 Days