Bulgaria plans to extradite a Frenchman suspected of knowing or having been in touch with one of the two Islamist militants who shot dead 12 people at the satirical newspaper Charlie Hebdo’s offices last week, prosecutors said on Monday. Using a European arrest warrant alleging that he had abducted his 3-year-old son and was likely to take him to Syria, Bulgarian police arrested Fritz-Joly Joachin, 29, on January 1st at a border checkpoint when he tried to cross into Turkey.