A bizarre incident in London saw an elderly man die after bursting into flames and authorities are baffled by what could have caused the blaze.
The odd event actually occurred a few months ago, but made headlines this week when police conceded that they are stumped by the case.
It all unfolded on a Saturday afternoon in September when witnesses called for help after spotting the man, named John Nolan, on fire in a London street.
Although rescue workers were able to extinguish the fire and transported Nolan to a nearby hospital, he subsequently died the following day due to the severity of his burns.
Since that time, police have tried to determine how and why Nolan became engulfed in flames while simply walking down the street, yet have failed to come up with any answers.
More on this head-scratching story and how it could be a rare case of spontaneous human combustion at the Coast to Coast AM website.