Spontaneous human combustion (SHC) is a name used to describe cases of the burning of a living human body without an apparent external source of ignition. Some regard SHC as a unique and currently unexplained phenomenon, others feel that cases described as SHC can be understood using current generally-accepted scientific principles, but the most common view by far is extreme scepticism. While there have been about 200 cited cases.
http://en.wikipedia.org/wiki/Spontan...man_combustion