by Clemente Sáez
There are many ways a person can arrive to the afterlife, but there is one beyond just “weird” and it can happen to anyone at any moment without any previous advertising, the spontaneous human combustion.
This is a really unlikely to happen and it consists in “burning” to ashes in a few seconds, the victims are devoured by the fire which unexplainably appears from nowhere but their own body.
Until this date this is been unable to be explained even by the most capable doctors and scientists.
Source: http://www.mundoparanormal.com/docs/parapsicologia/combustion_espontanea.html