It happened yesterday, while I was on the same line, but fortunately not on the same train !
Source, in french : _http://www.francetv.fr/info/un-homme-brandit-un-colt-45-dans-le-metro-parisien-et-menace-les-passagers_83347.html
FranceTVinfo said:"We're not all Mohamed Merah! You are manipulated!" A gunman has caused panic, Friday, April 13 around 9 am, on the Paris metro line 13. The train was between the stations Saint-Denis Université and Basilique Saint-Denis when a passenger pulled out a Colt 45 by threatening other passengers, said Le Parisien. According to preliminary investigation, the weapon was not loaded, but the man had two magazines filled on him, which contained six and ten cartridges. [note : the first reports also said that he had 2000€ in cash on him]
"The alarm was pulled and the train stopped in the tunnel," said the newspaper. "The driver got out of his cabin, and rose from inside the train to come and open the doors of the caboose, where was the gunman, and allow passengers to take refuge in other cars." No one was injured.
The man, who does not enjoy all his mental faculties, according to the prefecture, has managed to open the outer doors of the car. "He then fled on foot into the tunnel, along the tracks, before taking refuge in a niche," said the daily. "This is where the police of the LAC (anti-crime brigade) of Saint-Denis have arrested a few minutes later." The anti-terrorist section of the Crime Branch has received the survey.
Source, in french : _http://www.francetv.fr/info/un-homme-brandit-un-colt-45-dans-le-metro-parisien-et-menace-les-passagers_83347.html