I'm reading the memoirs of Napoleon Bonaparte by Louis Antoine Fauvelet de Bourrienne (http://www.freeinfosociety.com/media/pdf/4335.pdf) and on page 71, it says:

"During Bonaparte's stay at Paris a woman sent a messenger to warn him that his life would be attempted, and that poison was to be employed for that purpose. Bonaparte had the bearer of this information arrested, who: went, accompanied by the judge of the peace, to the woman's house, where she was found extended on the floor, and bathed in her blood. The men whose plot she had overheard, having discovered that she had revealed their secret, murdered her. The poor woman was dreadfully mangled: her throat was cut; and, not satisfied with that, the assassins had also hacked her body with sharp instruments. "

Did this actually happen? Are there an historians who have mentioned this incident and speculated on who was responsible?